332354 + Interview Questions in Secondary School in Math

1.	A (5,3) B (3,9) C(2,-1) are 3 points. If P Is a point such that area of the quadrilateral PABC is 10 sq units, then the Locus of P Is? Who Will Answer Me Correct I Will Mark Them As Brainleist
Answer» ong>Step-by-step explanation:P> AREA of the ΔABC will be : \frac{1}{2} 2 1 \| 5 3 -1 \| \| 3 -2 1 \| \| 2 -1 1 \| = \frac{1}{2} 2 1 \| ( 5 [(-2)(1) - (1)(-1)] - 3 [(3)(1) - (1)(2)] + (-1) [(3)(-1) - (-2)(2)] ) \| = \frac{1}{2} 2 1 \| (5(-2+1) - 3(3-2) -1(-3+4)) \| = \frac{1}{2} 2 1 \| ( -5 - 3 +1 ) \| = \frac{1}{2} 2 1 \| -7 \| = \frac{7}{2} 2 7 Therefore, area of the ΔABC is \frac{7}{2} 2 7 sq. units. Then, the area of the remaining portion, i.e, Area of the ΔPAC = Area of the quadrilateral - Area of the ΔABC = 10 - (7/2) = \frac{13}{2} 2 13 sq. units Now, to FIND the locus of P(x,y), equate the area of triangle PAC fomat to its area \frac{13}{2} 2 13 sq. units. \| x y 1 \| \frac{1}{2} 2 1 \| 5 3 1 \| = \frac{13}{2} 2 13 \| 2 -1 1 \| ⇒ \frac{1}{2} 2 1 \| ( x [(3)(1) - (1)(-1)] - y [(5)(1) - (1)(2)] + (1) [(5)(-1) - (3)(2)] ) \| = \frac{13}{2} 2 13 ⇒ \frac{1}{2} 2 1 \| x(3+1) - y(5-2) + 1(-5-6) \| = \frac{13}{2} 2 13 ⇒ \frac{1}{2} 2 1 \| 4x - 3y -11 \| = \frac{13}{2} 2 13 Cancelling \frac{1}{2} 2 1 on both sides, we get : ⇒ \| 4x - 3y -11 \| = 13 ⇒ 4x - 3y -11 = ± 13 So, the equations are 4x - 3y -11 = + 13 and 4x - 3y -11 = - 13, and the locus will be : ⇒ ( 4x - 3y -11 )² = (+13)(-13) ⇒ 16x² + 9y² + 2(4x)(-3y) + 2(4x)(-11) + 2(-3y)(-11) + (-11)² = -169 ⇒ 16x² + 9y² - 24xy - 88x + 66y + 121 + 169 = 0 ∴ 16x² + 9y² - 24xy - 88x + 66y + 290 = 0 Therefore, the locus of point P(x,y) is 16x² + 9y² - 24xy - 88x

1.

A (5,3) B (3,9) C(2,-1) are 3 points. If P Is a point such that area of the quadrilateral PABC is 10 sq units, then the Locus of P Is? Who Will Answer Me Correct I Will Mark Them As Brainleist

Answer»

ong>Step-by-step explanation:P>

AREA of the ΔABC will be :

\frac{1}{2}

2

1

| 5 3 -1 |

| 3 -2 1 |

| 2 -1 1 |

= \frac{1}{2}

2

1

| ( 5 [(-2)(1) - (1)(-1)] - 3 [(3)(1) - (1)(2)] + (-1) [(3)(-1) - (-2)(2)] ) |

= \frac{1}{2}

2

1

| (5(-2+1) - 3(3-2) -1(-3+4)) |

= \frac{1}{2}

2

1

| ( -5 - 3 +1 ) |

= \frac{1}{2}

2

1

| -7 |

= \frac{7}{2}

2

7

Therefore, area of the ΔABC is \frac{7}{2}

2

7

sq. units.

Then, the area of the remaining portion, i.e,

Area of the ΔPAC = Area of the quadrilateral - Area of the ΔABC

= 10 - (7/2)

= \frac{13}{2}

2

13

sq. units

Now, to FIND the locus of P(x,y), equate the area of triangle PAC fomat to its area \frac{13}{2}

2

13

sq. units.

| x y 1 |

\frac{1}{2}

2

1

| 5 3 1 | = \frac{13}{2}

2

13

| 2 -1 1 |

⇒ \frac{1}{2}

2

1

| ( x [(3)(1) - (1)(-1)] - y [(5)(1) - (1)(2)] + (1) [(5)(-1) - (3)(2)] ) | = \frac{13}{2}

2

13

⇒ \frac{1}{2}

2

1

| x(3+1) - y(5-2) + 1(-5-6) | = \frac{13}{2}

2

13

⇒ \frac{1}{2}

2

1

| 4x - 3y -11 | = \frac{13}{2}

2

13

Cancelling \frac{1}{2}

2

1

on both sides, we get :

⇒ | 4x - 3y -11 | = 13

⇒ 4x - 3y -11 = ± 13

So, the equations are 4x - 3y -11 = + 13 and 4x - 3y -11 = - 13, and the locus will be :

⇒ ( 4x - 3y -11 )² = (+13)(-13)

⇒ 16x² + 9y² + 2(4x)(-3y) + 2(4x)(-11) + 2(-3y)(-11) + (-11)² = -169

⇒ 16x² + 9y² - 24xy - 88x + 66y + 121 + 169 = 0

∴ 16x² + 9y² - 24xy - 88x + 66y + 290 = 0

Therefore, the locus of point P(x,y) is

16x² + 9y² - 24xy - 88x

Discussion

2.	the following pair of linear equation intersect at a point or parallel or coincide 3 X + 2 y = 5 and 6 X + 4 y = 10
Answer» ) is the SOLUTION Step-by-step EXPLANATION: (6,4)

2.

the following pair of linear equation intersect at a point or parallel or coincide 3 X + 2 y = 5 and 6 X + 4 y = 10

Answer»

) is the SOLUTION

Step-by-step EXPLANATION:

(6,4)

Discussion

3.	Write the direction ratios of X, Y and Z axes.
Answer» ong>Answer: THEY ARE MUTUALLY PERPENDICULAR Step-by-step explanation: IF X AXIS IS HORIZONTAL THEN Y AXIS IS VRTICAL AND Z AXIS IS DIAGONAL

3.

Write the direction ratios of X, Y and Z axes.

Answer»

ong>Answer:

THEY ARE MUTUALLY PERPENDICULAR

Step-by-step explanation:

IF X AXIS IS HORIZONTAL THEN Y AXIS IS VRTICAL AND Z AXIS IS DIAGONAL

Discussion

4.	1. Write the degree of polynomial (z²+1) (z+2) 2. The square of a number is the product obtained by _______ the number itself3. Find the value of 4 X (27)⁻²∕³4. The value of (0.04)³∕² will be5. Find the value of x, if (3/7)x = 1 6. value of ³√0.000001 will be7. The degree of constant polynomial is8. The cube of -0.03 is9. Which of the following is an algebraic identity?10. A polynomial of degree____is called a quartic polynomial11. If x and y vary directly with each other and x = 27, what is y when constant of variation is 3?12. The square root of 2.380849 has___decimal places.13. Value of r for which ( y²+ 3y + r) divisible by (y-2) is14. How many non-square numbers lie between 26² and 27² ?15. The cube root of -216 is16. The value of √169 X 49 is17. The identity (x-a) (x-b) =18. On dividing 24y⁵ by (-3y²), we get19. on simplifying (6/5)³ dividing (5/6), we get20. The first five triangular numbers are21. Value of (5⁻¹ X 3⁻¹)⁰ is22. (0.027)²∕³ is equal to23. on solving the exponential equation (√3)x = (3)6 , we get x = 24. On simplifying using suitable identity: (82)² - (18)² , we get25. On dividing √27 x³ by 3√3 x² , we get26. A statement of equality which holds for all values of the variable is called______.27. Speed of a moving body and time taken to cover a particular distance vary_____with each other.28. The value of (5⁰ x 7⁰ x 2⁰ + 3⁰ x 6 + 4⁰)²/³
Answer» ONG>Answer: 3 4 5 6 4 5 4 5 7 9 5 7 2 8 1 8 2 8 5 8 4 ~ \ ~ ^ \ ^

Discussion

5.	Solve the following equation: x+3/2-4/3=3x-7/3
Answer» ong>Answer: X+3/2-4/3=3X-7/3 We MOVE all terms to the LEFT: X+3/2-4/3-(3X-7/3)=0 We add all the numbers together, and all the variables X-(+3X-7/3)+3/2-4/3=0 We get rid of parentheses X-3X+7/3+3/2-4/3=0 We calculate fractions There is no SOLUTION for this equation PLZ MARK AS BRAINLIEST ANSWER ,FOLLOW ME AND THX FOR THE SUPERB QUESTION

5.

Solve the following equation: x+3/2-4/3=3x-7/3

Answer»

ong>Answer:

X+3/2-4/3=3X-7/3

We MOVE all terms to the LEFT:

X+3/2-4/3-(3X-7/3)=0

We add all the numbers together, and all the variables

X-(+3X-7/3)+3/2-4/3=0

We get rid of parentheses

X-3X+7/3+3/2-4/3=0

We calculate fractions

There is no SOLUTION for this equation

PLZ MARK AS BRAINLIEST ANSWER ,FOLLOW ME AND THX FOR THE SUPERB QUESTION

Discussion

6.	Prove the points (2,4), (3,1) and (4,-2) cannot form the vertices of a triangle
Answer» ONG>Step-by-step EXPLANATION: Ksmzmzmzmzmmsmdndkwkdmsbdnsnw

Discussion

7.	Find the square root of1 + (1-a^2)^1/2÷a
Answer» ONG>ANSWER: fun DUG shsjshsbsjajau Step-by-step EXPLANATION: svshdhdnjxbduskskajsjzjs

7.

Find the square root of1 + (1-a^2)^1/2÷a

Answer» ONG>ANSWER:

fun DUG shsjshsbsjajau

Step-by-step EXPLANATION:

svshdhdnjxbduskskajsjzjs

Discussion

8.	observation of some data x,x/3,x/2,x/4 and x/5 where x>0. if the median of the data is 19 find the value of x
Answer» is even, then the median is 2( 2n ) th+( 2n +1)th=19 APPLY this METHOD u EASILY GET answer

8.

observation of some data x,x/3,x/2,x/4 and x/5 where x>0. if the median of the data is 19 find the value of x

Answer»

is even, then the median is

2( 2n ) th+( 2n +1)th=19

APPLY this METHOD u EASILY GET answer

Discussion

9.	Write the legal measures taken to eredicate untouchbility
Answer» ong>Answer: The UNTOUCHABILITY Offences ACT, 1955- Among other things it provides penalties for Preventing a person on the ground of untouchability from entering a place of public worship, offering prayers therein or taking WATER from a SACRED tank, WELL or spring. Step-by-step explanation: hope it helps you mate have a good day ❤️✌️

9.

Write the legal measures taken to eredicate untouchbility

Answer»

ong>Answer:

The UNTOUCHABILITY Offences ACT, 1955- Among other things it provides penalties for Preventing a person on the ground of untouchability from entering a place of public worship, offering prayers therein or taking WATER from a SACRED tank, WELL or spring.

Step-by-step explanation:

hope it helps you mate have a good day ❤️✌️

Discussion

10.	Find the value of n: (7/12)^-4×(7/12)^3n = (7/12)^5
Answer» ONG>Answer: 3 Step-by-step EXPLANATION: $(\frac{7}{12})^{-4} * (\frac{7}{12})^{3n} = (\frac{7}{12})^{5}$ $(\frac{7}{12})^{3n-4} = (\frac{7}{12})^{5}$ $3n - 4 = 5$ $3n = 9$ $n=3$

10.

Find the value of n: (7/12)^-4×(7/12)^3n = (7/12)^5

Answer» ONG>Answer:

3

Step-by-step EXPLANATION:

$(\frac{7}{12})^{-4} * (\frac{7}{12})^{3n} = (\frac{7}{12})^{5}$

$(\frac{7}{12})^{3n-4} = (\frac{7}{12})^{5}$

$3n - 4 = 5$

$3n = 9$

$n=3$

Discussion

11.	(i) 0.2 integers and 90.[2014](iv) 18.48 2014 (vii) 1.323 [2010] (vii(x) 0.407 [2014Express 2.36 +0.23 as a frрExpress in the form of9ANS(non
Answer» ong>Step-by-step explanation: The number of electrons in a neutral ATOM is equal to the number of protons. The mass number of the atom (M) is equal to the SUM of the number of protons and neutrons in the NUCLEUS. The number of neutrons is equal to the difference between the mass number of the atom (M) and the ATOMIC number

11.

(i) 0.2 integers and 90.[2014](iv) 18.48 2014 (vii) 1.323 [2010] (vii(x) 0.407 [2014Express 2.36 +0.23 as a frрExpress in the form of9ANS(non

Answer»

ong>Step-by-step explanation:

The number of electrons in a neutral ATOM is equal to the number of protons. The mass number of the atom (M) is equal to the SUM of the number of protons and neutrons in the NUCLEUS. The number of neutrons is equal to the difference between the mass number of the atom (M) and the ATOMIC number

Discussion

12.	2. Find x +tyy + zBoxgoN20y
Answer» ong>ANSWER: the question is not CORRECT Sorry i am not ABLE to answer

12.

2. Find x +tyy + zBoxgoN20y

Answer»

ong>ANSWER:

the question is not CORRECT

Sorry i am not ABLE to answer

Discussion

13.	Visualise the position of 5.665 on the number line through successive magnification please no scam
Answer» is the ANSWER which TELLS by STEP by step EXPLANATION

Discussion

14.	A code for google classroom consist of two different letters followed by 4 different digits. How many total different codes can be generated ?
Answer» ONG>Answer: please mark a BRAINLIST and follow me

Discussion

15.	A cook can bake 17 cakes one after the other in 7 h 22 min. How long does he take to bake each cake? The Earth takes 24 hours to complete one rotation about its axis. How many hours does it take torotate 5 times?
Answer» ong>Step-by-step explanation: A cook can bake 17 cake ONE after the other in 7h 22min how long does hetake bake each cake 7h22min×17=12,274 the earth take 24 hours to COMPLETE one rotation about its axis How MANY hours does it take to rotate 5 times 24×5 =120 is the RIGHT answer and PLEASE follow me

15.

A cook can bake 17 cakes one after the other in 7 h 22 min. How long does he take to bake each cake? The Earth takes 24 hours to complete one rotation about its axis. How many hours does it take torotate 5 times?

Answer»

ong>Step-by-step explanation:

A cook can bake 17 cake

ONE after the other in 7h 22min

how long does hetake bake each cake

7h22min×17=12,274

the earth take 24 hours to COMPLETE one rotation about its axis

How MANY hours does it take to rotate 5 times

24×5 =120

is the RIGHT answer and PLEASE follow me

Discussion

16.	Complete each of the following magic square by filling the correct missing number 15_13_12__ __ __9
Answer» ong>Answer: 15 ,14 ,13,12 ,11, 10, 9 HOPE it HELPS you

16.

Complete each of the following magic square by filling the correct missing number 15_13_12 __9

Answer»

ong>Answer:

15 ,14 ,13,12 ,11, 10, 9

HOPE it HELPS you

Discussion

17.	At the rate of * 3/- per m², cost of painting a rectangular floor is* 7,056/-. If the breadth of the flooris 75% of its length, then what is thelength of the floor ?
Answer» Given: At the rate of * 3/- per m², cost of painting a RECTANGULAR FLOOR is Rs. 7,056/- To find: The length of the floor Solution: Let's assume, "l" → the length of the rectangular floor "b" → the breadth of the rectangular floor It is given that the breadth is 75% of its length, so we can form an eq. as: b = $\frac{75}{100} \times l$ $\implies b = \frac{3}{4} \times l$ ...... (i) We know that, The cost of painting the rectangular floor = Rs. 7056 ⇒ [AREA of the rectangular floor] × [rate per meter SQUARE] = Rs. 7056 ⇒ [l × b] × 3 = 7056 substituting the value of b from (i), we get ⇒ $[l \times \frac{3}{4}\times l ] \times 3 = 7056$ ⇒ $l^2 \times \frac{9}{4} = 7056$ ⇒ $l^2 = \frac{7056 \times 4}{9}$ ⇒ $l^2 = 3136$ ⇒ $l = \sqrt{3136}$ ⇒ $\bold{l = 56\:m}$ Thus, the length of the floor is → *56 m. ------------------------------------------------------------------------------------------* Also View: find the cost of painting the walls of a room at rupees 25 per square metre if Length breadth and height of a room has 6 m, 4 m and 2.5 M respectively brainly.in/question/7931183 a rectangular room is of length 10m, breadth 6m , height 3m. the four walls and the roof have to be painted. if the cost of painting is 75/- per square metre, what will be the TOTAL cost? the area of the windows and doors is 6 sq.m , which are not to be painted. brainly.in/question/1982836 Find the cost of painting a tank of dimension 3m×2m×1.5m at rupees 20 per square metre brainly.in/question/2084952 Find the cost of painting the walls of a room if the room is 4m 50cm high and each side of the room is 6m long .The cost of painting is Rs10per Sq metre? brainly.in/question/2252685

17.

At the rate of * 3/- per m², cost of painting a rectangular floor is* 7,056/-. If the breadth of the flooris 75% of its length, then what is thelength of the floor ?

Answer» Given:

At the rate of * 3/- per m², cost of painting a RECTANGULAR FLOOR is Rs. 7,056/-

To find:

The length of the floor

Solution:

Let's assume,

"l" → the length of the rectangular floor

"b" → the breadth of the rectangular floor

It is given that the breadth is 75% of its length, so we can form an eq. as:

b = $\frac{75}{100} \times l$

$\implies b = \frac{3}{4} \times l$ ...... (i)

We know that,

The cost of painting the rectangular floor = Rs. 7056

⇒ [AREA of the rectangular floor] × [rate per meter SQUARE] = Rs. 7056

⇒ [l × b] × 3 = 7056

substituting the value of b from (i), we get

⇒ $[l \times \frac{3}{4}\times l ] \times 3 = 7056$

⇒ $l^2 \times \frac{9}{4} = 7056$

⇒ $l^2 = \frac{7056 \times 4}{9}$

⇒ $l^2 = 3136$

⇒ $l = \sqrt{3136}$

⇒ $\bold{l = 56\:m}$

Thus, the length of the floor is → 56 m.

------------------------------------------------------------------------------------------

Also View:

find the cost of painting the walls of a room at rupees 25 per square metre if Length breadth and height of a room has 6 m, 4 m and 2.5 M respectively

brainly.in/question/7931183

a rectangular room is of length 10m, breadth 6m , height 3m. the four walls and the roof have to be painted. if the cost of painting is 75/- per square metre, what will be the TOTAL cost? the area of the windows and doors is 6 sq.m , which are not to be painted.

brainly.in/question/1982836

Find the cost of painting a tank of dimension 3m×2m×1.5m at rupees 20 per square metre

brainly.in/question/2084952

Find the cost of painting the walls of a room if the room is 4m 50cm high and each side of the room is 6m long .The cost of painting is Rs10per Sq metre?

brainly.in/question/2252685

Discussion

18.	26. A letter of English alphabet is chosen at random. Find the probability that the letter chosen does notoccur in the word 'PUNCUTATION'.
Answer» ONG>Answer: the PROBABILITY is 1 /11 Step-by-step explanation: HOPE it HELPS you

18.

26. A letter of English alphabet is chosen at random. Find the probability that the letter chosen does notoccur in the word 'PUNCUTATION'.

Answer» ONG>Answer:

the PROBABILITY is

1 /11

Step-by-step explanation:

HOPE it HELPS you

Discussion

19.	Find the polynomial whose zeroes are double the zeroes of polynomial is x^2-x-42
Answer» align="absmiddle" ALT="{\tt{\pink{\UNDERLINE{\underline{\HUGE{Answer:}}}}}}" class="latex-formula" id="TexFormula1" SRC="https://tex.z-dn.net/?f=%7B%5Ctt%7B%5Cpink%7B%5Cunderline%7B%5Cunderline%7B%5Chuge%7BAnswer%3A%7D%7D%7D%7D%7D%7D" title="{\tt{\pink{\underline{\underline{\huge{Answer:}}}}}}"> $\implies\sf{x}^{2} - x - 42 = 0$ $\implies\sf {x}^{2} - 7x + 6x - 42 = 0$ $\implies\sf \: x(x - 7) + 6(x - 7) = 0$ $\implies\sf(x + 6) = 0 \: \: or \: \: (x - 7) = 0$ $\implies\sf \: x = - 6 \: \: or \: \: x = 7$ _________________________________

19.

Find the polynomial whose zeroes are double the zeroes of polynomial is x^2-x-42

Answer»

align="absmiddle" ALT="{\tt{\pink{\UNDERLINE{\underline{\HUGE{Answer:}}}}}}" class="latex-formula" id="TexFormula1" SRC="https://tex.z-dn.net/?f=%7B%5Ctt%7B%5Cpink%7B%5Cunderline%7B%5Cunderline%7B%5Chuge%7BAnswer%3A%7D%7D%7D%7D%7D%7D" title="{\tt{\pink{\underline{\underline{\huge{Answer:}}}}}}">

$\implies\sf{x}^{2} - x - 42 = 0$

$\implies\sf {x}^{2} - 7x + 6x - 42 = 0$

$\implies\sf \: x(x - 7) + 6(x - 7) = 0$

$\implies\sf(x + 6) = 0 \: \: or \: \: (x - 7) = 0$

$\implies\sf \: x = - 6 \: \: or \: \: x = 7$

_________________________________

Discussion

20.	Can anyone solve this please?
Answer» ONG>ANSWER: SORRY nzhzhsjsjsjsjsjsjsjsjsk

Discussion

21.	15) If BD = 2BA + AD, LM = 3LP – PM and BA = 3cm, AD = 2cm, LP = 4cm and PM = 1cm. Find which is greater, BD or LMTonic 2. Triangles.
Answer» ONG>ANSWER: BD IS GREATER if you are INTERESTED in my answer plz GIVE me like and also FOLLOW me then I followed you

21.

15) If BD = 2BA + AD, LM = 3LP – PM and BA = 3cm, AD = 2cm, LP = 4cm and PM = 1cm. Find which is greater, BD or LMTonic 2. Triangles.

Answer» ONG>ANSWER:

BD IS GREATER

if you are INTERESTED in my answer plz GIVE me like and also FOLLOW me then I followed you

Discussion

22.	If n(a×b)=45, then n (a) can't be
Answer» ong>Answer: 2, 4, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44.

22.

If n(a×b)=45, then n (a) can't be

Answer»

ong>Answer:

2, 4, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44.

Discussion

23.	What is impossible and sure or cretain event
Answer» ONG>Step-by-step explanation: Please mark it as brain list and FOLLOW me friends for completing 200 followers

Discussion

24.	The height of a cone is 8m and its Curved Surface Area is 188.4m².Find its volume.(Take π=3.14)
Answer» Correct question:- The height of a CONE is 8m and its CURVED surface AREA is 188.4m².FIND its volume (Take π = 3.14) Given:- →Height of the cone=8m →C.S.A of the cone=188.4m² →Value of π= 3.14 To find:- →Volume of the cone Solution:- Let the radius be r metre and the slant height be l metres. =>C.S.A of a cone= πrl m² => πr√r²+h² m² =>(3.14×r×√r²+64)m² =>3.14×r×√r²+64=188.4 =>r√r²+64 = 188.4/3.14 =>r√r²+64 = 60 =>r²(r²+64) = 3600 =>r²+64r²-3600 = 0 =>(r²+100)(r²-36)=0 Since,r²= -100 gives an imaginary value of r =>r²=36 =>r=6 Hence,we got radius of base of the cone as 6m. =>Volume of a cone= 1/3πr²h =>1/3×3.14×6×6×8 =>904.32/3 =>301.44 m³ Thus,volume of the cone is 301.44m³.

24.

The height of a cone is 8m and its Curved Surface Area is 188.4m².Find its volume.(Take π=3.14)

Answer»

Correct question:-

The height of a CONE is 8m and its CURVED surface AREA is 188.4m².FIND its volume (Take π = 3.14)

Given:-

→Height of the cone=8m

→C.S.A of the cone=188.4m²

→Value of π= 3.14

To find:-

→Volume of the cone

Solution:-

Let the radius be r metre and the slant height be l metres.

=>C.S.A of a cone= πrl m²

=> πr√r²+h² m²

=>(3.14×r×√r²+64)m²

=>3.14×r×√r²+64=188.4

=>r√r²+64 = 188.4/3.14

=>r√r²+64 = 60

=>r²(r²+64) = 3600

=>r²+64r²-3600 = 0

=>(r²+100)(r²-36)=0

Since,r²= -100 gives an imaginary value of r

=>r²=36

=>r=6

Hence,we got radius of base of the cone as 6m.

=>Volume of a cone= 1/3πr²h

=>1/3×3.14×6×6×8

=>904.32/3

=>301.44 m³

Thus,volume of the cone is 301.44m³.

Discussion

25.	Please solve it fast and not send inrevvelent answer please its urgent
Answer» ONG>Answer: 39=3×10+1×9 Step-by-step explanation: 39=3×10+1×9

25.

Please solve it fast and not send inrevvelent answer please its urgent

Answer» ONG>Answer:

39=3×10+1×9

Step-by-step explanation:

39=3×10+1×9

Discussion

26.	Cube root of 0.002197 step by step instructions
Answer» the CORRECT

Discussion

27.	लोगों ने बैलों को पकड़कर कहां पर डाल दिया गया?
Answer» ONG>Answer: लोगों ने पैरों को पकड़कर कांजी हाउस में डाल दिया था। *hope it helps you dear!! please mark it as BRAINLIEST!! EK thanks* to zaroor Dena.**

27.

लोगों ने बैलों को पकड़कर कहां पर डाल दिया गया?

Answer» ONG>Answer:

लोगों ने पैरों को पकड़कर कांजी हाउस में डाल दिया था।

hope it helps you dear!!

please mark it as BRAINLIEST!!

EK thanks to zaroor Dena.

Discussion

28.	Solve ( + 8 ) + (–4 ) + (–2 ) using number line.
Answer» ONG>ANSWER: HOPE the above pic will be HELPFUL.....

Discussion

29.	In a ∆ ABC, if A = 30°, b = 2, c= √3+1. then C-B/2(A) 15°(C)45°(B) 30°(D) None of these
Answer» ong>Answer: c is correct 1 PLEASE FOLLOW me I will follow U BACK

29.

In a ∆ ABC, if A = 30°, b = 2, c= √3+1. then C-B/2(A) 15°(C)45°(B) 30°(D) None of these

Answer»

ong>Answer:

c is correct 1 PLEASE FOLLOW me I will follow U BACK

Discussion

30.	A code consist of two different letters followed by 4 different digits. How many total different codes can be generated ? CLASS 11 PERMUTATION AND COMBINATION
Answer» ong>Answer: I THINK 9 is correct answer PLEASE mark as brainliest PLZ.....

30.

A code consist of two different letters followed by 4 different digits. How many total different codes can be generated ? CLASS 11 PERMUTATION AND COMBINATION

Answer»

ong>Answer:

I THINK 9 is correct answer PLEASE mark as brainliest PLZ.....

Discussion

31.	There are 459 students in a hostel. If the number of students increased by 36, the expenses of the mess increased by Rs .81 Per day while the average expenditure per head reduced by 1. Find the original expenditure of the mess?
Answer» ong>Step-by-step EXPLANATION: ANS is SOLVED in above pic

31.

There are 459 students in a hostel. If the number of students increased by 36, the expenses of the mess increased by Rs .81 Per day while the average expenditure per head reduced by 1. Find the original expenditure of the mess?

Answer»

ong>Step-by-step EXPLANATION:

ANS is SOLVED in above pic

Discussion

32.	(a^2+b^2) (-a^2+b^2)
Answer» ong>Answer: (a+b)(a-b)(a²+b²-(a-b)(a+b)] Step-by-step EXPLANATION: (a² - b²)(a²+b²) - (a² - b²)² = (a²-b²) [a² + b² - (a²-b²)] = (a+b)(a-b)(a²+b²-(a-b)(a+b)] Please MARK me as brainliest......

32.

(a^2+b^2) (-a^2+b^2)

Answer»

ong>Answer:

(a+b)(a-b)(a²+b²-(a-b)(a+b)]

Step-by-step EXPLANATION:

(a² - b²)(a²+b²) - (a² - b²)²

= (a²-b²) [a² + b² - (a²-b²)]

= (a+b)(a-b)(a²+b²-(a-b)(a+b)]

Please MARK me as brainliest......

Discussion

33.	If sin2 A=0 then find the value of cos A.
Answer» ONG>Answer: 1/√2 Step-by-step EXPLANATION: sin 2A = 0 = sin 90° => 2A = 90 => A = 45° So, cos A = cos 45° = 1/√2

33.

If sin2 A=0 then find the value of cos A.

Answer» ONG>Answer:

1/√2

Step-by-step EXPLANATION:

sin 2A = 0 = sin 90°

=> 2A = 90

=> A = 45°

So, cos A = cos 45° = 1/√2

Discussion

34.	If f(x) = 5*, prove that,[i] f(x+2) = 25f(x)
Answer» ONG>Answer: PLEASE CHECK the question again something is missing

Discussion

35.	A park has a perimeter of 7/3 kilometers. If a boy takes 3 rounds of it,how many kilometers has he run?
Answer» ONG>Answer: 7 KM is the answer Step-by-step EXPLANATION: (7/3)×3=7km

35.

A park has a perimeter of 7/3 kilometers. If a boy takes 3 rounds of it,how many kilometers has he run?

Answer» ONG>Answer:

7 KM is the answer

Step-by-step EXPLANATION:

(7/3)×3=7km

Discussion

36.	Rationalize the denominator give ans. of all questions plz do not spam and best ans. will be marked as brainlist....
Answer» KS for the QUESTIONS

Discussion

37.	A rabit start running and after it has taken 27 steps, a cheetah starts chasing it. gor every eight steps rabit takes five steps, but two steps of the chetah are equL to 5 steps of rabit. how many steps did cheetah take before grabbing the rabit
Answer» ong>Step-by-step EXPLANATION: before GRABBING the rabbit cheetah took 8 steps

37.

A rabit start running and after it has taken 27 steps, a cheetah starts chasing it. gor every eight steps rabit takes five steps, but two steps of the chetah are equL to 5 steps of rabit. how many steps did cheetah take before grabbing the rabit

Answer»

ong>Step-by-step EXPLANATION:

before GRABBING the rabbit cheetah took 8 steps

Discussion

38.	37*1/2% के बराबर कौन-सी भिन्न है ?
Answer» 37*1/2% के बराबर कौन-सी भिन्न है ?

38.

37*1/2% के बराबर कौन-सी भिन्न है ?

Answer»

37*1/2% के बराबर कौन-सी भिन्न है ?

Discussion

39.	Satvir has a sum of 10000 rupees with him. He invested a part of it at the rate of 10% per annum and other at 8% per annum. Both compound annually. The interest he received after 2 years was 1926 rupees. In what parts did he divided the sum?
Answer» ong>ANSWER: WARNING Step-by-step explanation: BOT HELP ALL MAKE BOT BRAINLIST INBOX YOU

39.

Satvir has a sum of 10000 rupees with him. He invested a part of it at the rate of 10% per annum and other at 8% per annum. Both compound annually. The interest he received after 2 years was 1926 rupees. In what parts did he divided the sum?

Answer»

ong>ANSWER:

WARNING

Step-by-step explanation:

BOT HELP ALL MAKE BOT BRAINLIST INBOX YOU

Discussion

40.	0 (0,0) A (6,0) B (0,4) are 3 points. If P is a point such that area oftriangle POB as twice the area of triangle POA, thenthe locus of P ?Who Will Say Me The Correct Answer And I Will Mark Them As Brainleist
Answer» ONG>ANSWER: sorry I didn't understand UR QUESTION

Discussion

41.	Draw a rough sketch of a quadrilateral ABCD,State
Answer» IED to ANSWER UR QUESTION. □ This is a QUARDRILATERAL

41.

Draw a rough sketch of a quadrilateral ABCD,State

Answer» IED to ANSWER UR QUESTION.

□

This is a QUARDRILATERAL

Discussion

42.	The hypotenuse of a right angled triangle is 25cm and the base is 7cm .Find the height of the triangle.
Answer» ong>Answer: HYPOTNUSE = 25 CM BASE = 7 cm Height = X cm Using pythagoras Theorem : Hypotnuse² = Height ² + Base ² (25)² = (7)² + x² 625 = 49 + x² 625 - 49 = x² 576 = x² √576 = x x = 24 cm Hence the Height is 24 cm... Pls mark it as the BRAINLIEST

42.

The hypotenuse of a right angled triangle is 25cm and the base is 7cm .Find the height of the triangle.

Answer»

ong>Answer:

HYPOTNUSE = 25 CM

BASE = 7 cm

Height = X cm

Using pythagoras Theorem :

Hypotnuse² = Height ² + Base ²

(25)² = (7)² + x²

625 = 49 + x²

625 - 49 = x²

576 = x²

√576 = x

x = 24 cm

Hence the Height is 24 cm...

Pls mark it as the BRAINLIEST

Discussion

43.	Express 70 centimeters as a percentage of 2 meters
Answer» ONG>ANSWER: usie92jidiejr9ej2odkjwkzo

Discussion

44.	Convert 480 rupees into paise
Answer» ONG>Answer: 28800 Step-by-step explanation: this is the ANS hope it HELPS

44.

Convert 480 rupees into paise

Answer» ONG>Answer:

28800

Step-by-step explanation:

this is the ANS hope it HELPS

Discussion

45.	If 2/5of a number is 40,then then the number is
Answer» ONG>Answer: 16 MAYBE don't KNOW EXACTLY

Discussion

46.	Median of the data when mode = 40 and mean =34.
Answer» er 36 Step-by-step EXPLANATION: mode = 3median-2mean 40 = 3median-2×34 40 = 3median-68 40+68 = 3median 108 = 3median 108÷3 = median 36 = median

46.

Median of the data when mode = 40 and mean =34.

Answer»

er

36

Step-by-step EXPLANATION:

mode = 3median-2mean

40 = 3median-2×34

40 = 3median-68

40+68 = 3median

108 = 3median

108÷3 = median

36 = median

Discussion

47.	If x+y=8 & xy=15 find the value of ( x^2+y^2)
Answer» x+y = 8 and XY = 15 Squaring (x+y) we (x+y)^2 = x^2 + y^2 + 2xy. ( since (a+b)^2 = a^2 + b^2+ 2ab) 88 = x^2 + y^2 + 215. ( since x+y = 8 and xy = 15) 64 = x^2 + y^2 + 30 64 - 30 = x^2 + y^2 x^2 + y^2 = 34

Discussion

48.	How to do prime factorisation of 521 square root
Answer» 521 and Level 6 521 is a prime number. Prime factorization: 521 is prime. The EXPONENT of prime number 521 is 1. Adding 1 to that exponent we get (1 + 1) = 2. ... Factors of 521: 1, 521. Factor pairs: 521 = 1 x 521. 521 has no square factors that ALLOW its square root to be SIMPLIFIED. √521 ≈ 22.8254244. I hope it will help you

48.

How to do prime factorisation of 521 square root

Answer»

521 and Level 6

521 is a prime number.

Prime factorization: 521 is prime.

The EXPONENT of prime number 521 is 1. Adding 1 to that exponent we get (1 + 1) = 2. ...

Factors of 521: 1, 521.

Factor pairs: 521 = 1 x 521.

521 has no square factors that ALLOW its square root to be SIMPLIFIED. √521 ≈ 22.8254244.

I hope it will help you

Discussion

49.	sum of two natural number is 100 and their difference is 10. what are the numbers? step by step explanation need
Answer» ONG>Step-by-step EXPLANATION: ggyuchugfffgehhrueeueveheeueuvejeievdeidbdgdjdndjhdbdjdudb dudhebdhsowgwywbebeiuevdysbebsusn sjjdhebdjdjd dbhdjdxdmjdmdodbd XXXXXXX

49.

sum of two natural number is 100 and their difference is 10. what are the numbers? step by step explanation need

Answer» ONG>Step-by-step EXPLANATION:

ggyuchugfffgehhrueeueveheeueuvejeievdeidbdgdjdndjhdbdjdudb dudhebdhsowgwywbebeiuevdysbebsusn

sjjdhebdjdjd

dbhdjdxdmjdmdodbd XXXXXXX

Discussion

50.	Divide 1000000 by 2197
Answer» ONG>Answer: 455.166136 Please MARK as BRAINLIST

50.

Divide 1000000 by 2197

Answer» ONG>Answer:

455.166136

Please MARK as BRAINLIST

Discussion

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BOT HELP ALL MAKE BOT BRAINLIST INBOX YOU

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Cube root of 0.002197 step by step instructions

लोगों ने बैलों को पकड़कर कहां पर डाल दिया गया?

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If sin2 A=0 then find the value of cos A.

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A rabit start running and after it has taken 27 steps, a cheetah starts chasing it. gor every eight steps rabit takes five steps, but two steps of the chetah are equL to 5 steps of rabit. how many steps did cheetah take before grabbing the rabit

37*1/2% के बराबर कौन-सी भिन्न है ?

Satvir has a sum of 10000 rupees with him. He invested a part of it at the rate of 10% per annum and other at 8% per annum. Both compound annually. The interest he received after 2 years was 1926 rupees. In what parts did he divided the sum?

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sum of two natural number is 100 and their difference is 10. what are the numbers? step by step explanation need

Divide 1000000 by 2197