332354 + Interview Questions in Secondary School in Math

1.	Q-1. The cost of 4 m of a certain cloth is Rs. 228a. Find the cost of 15 m of the same clothb. How many metres of this can be bought for Rs. 627Q-2. The length and breadth of a rectangle are in ratio 5:4. If its breadth is 80cm find the length.Q-3. Find x of x, 36 and 27 are in continued proportion.PLEASE ANSWER MY QUESTION :):):):):):)
Answer» 1. Given Cost of 4m CLOTH = RS 228 Now, cost of 1 m cloth = 228/4 = Rs 57 a ) Cost of 15 m of the cloth = 15 × 57 = Rs 855 $Let \: x \:m \: of \:cloth \: bought \:at \:Rs \:627$ $x = \frac{627}{cost \:of \:1\:m \:cloth }\\= \frac{627}{<klux>57</klux>} \\= 11\:m$ $Let \: l \:and \: b \:are \: length \:and \: breadth \\of \: a \: rectangle$ $l : m = 5 : 4 \: (given)$ $Let \: l = 5x , \:and \: b = 4x$ $b = 80 \:cm \:(given)$ $\implies 4x = 80$ $\implies x = \frac{80}{4} = 20$ $Now, \: l = 5x = 5 \times 20 = 100 \:cm$ $3 ) x , 36 \:and \: 27 \: are \: in \: continued \\proportion$ $\pink { If \: a,b\:c \:are \:in \: continued }\\\pink {proportion \:then \:b^{2} = ac }$ $\implies 36^{2} = x \times 27$ $\implies x = \frac{ 36 \times 36 }{27} \\= 48$ •••♪

1.

Q-1. The cost of 4 m of a certain cloth is Rs. 228a. Find the cost of 15 m of the same clothb. How many metres of this can be bought for Rs. 627Q-2. The length and breadth of a rectangle are in ratio 5:4. If its breadth is 80cm find the length.Q-3. Find x of x, 36 and 27 are in continued proportion.PLEASE ANSWER MY QUESTION :):):):):):)

Answer»

1. Given Cost of 4m CLOTH = RS 228

Now, cost of 1 m cloth = 228/4 = Rs 57

a ) Cost of 15 m of the cloth = 15 × 57

= Rs 855

$Let \: x \:m \: of \:cloth \: bought \:at \:Rs \:627$

$x = \frac{627}{cost \:of \:1\:m \:cloth }\\= \frac{627}{<klux>57</klux>} \\= 11\:m$

$Let \: l \:and \: b \:are \: length \:and \: breadth \\of \: a \: rectangle$

$l : m = 5 : 4 \: (given)$

$Let \: l = 5x , \:and \: b = 4x$

$b = 80 \:cm \:(given)$

$\implies 4x = 80$

$\implies x = \frac{80}{4} = 20$

$Now, \: l = 5x = 5 \times 20 = 100 \:cm$

$3 ) x , 36 \:and \: 27 \: are \: in \: continued \\proportion$

$\pink { If \: a,b\:c \:are \:in \: continued }\\\pink {proportion \:then \:b^{2} = ac }$

$\implies 36^{2} = x \times 27$

$\implies x = \frac{ 36 \times 36 }{27} \\= 48$

•••♪

Discussion

2.	Find the perimeter of the trapezium OPQR in which OR iserpendicular to OP and RQ; OP=10 cm, RO = 15 cm andOR =12 cm. (please send ans me fast)
Answer» ANSWER: The CORRECT answer is 47

2.

Find the perimeter of the trapezium OPQR in which OR iserpendicular to OP and RQ; OP=10 cm, RO = 15 cm andOR =12 cm. (please send ans me fast)

Answer»

ANSWER:

The CORRECT answer is 47

Discussion

3.	Solve please or jise nhi aata h wo ans n de please bhut presan hu
Answer» Answer: Ans will be in attachment Step-by-step explanation: HOPE it helped and handwriting is UNDERSTOOD Mark the brainlist ans with THANKS.

3.

Solve please or jise nhi aata h wo ans n de please bhut presan hu

Answer»

Answer:

Ans will be in attachment

Step-by-step explanation:

HOPE it helped and handwriting is UNDERSTOOD

Mark the brainlist ans with THANKS.

Discussion

4.	Express each in km/h=125 cm/s
Answer» ANSWER: HOPE you this is HELPFUL . like and mark me as BRILLIANT.

4.

Express each in km/h=125 cm/s

Answer»

ANSWER:

HOPE you this is HELPFUL . like and mark me as BRILLIANT.

Discussion

5.	74) RS. 1600Derweer two numbers is 2:3. I each number is increased by 4. the ratio becomes 5Then ist number is1352) 163) 244) 32thritici
Answer» Answer: 7 4) RS. 1600 Derweer two numbers is 2:3. I each number is increased by 4. the ratio becomes 5 Then ist number is 135 2) 16 3) 24 4) 32 tthritici GGG I will be there at 7 pm Step-by-step explanation: 6. USING the GIVEN pattern, find the missing numbers. 1²+2 + 2 = 3² 2²+ 3² + 6 = 7 To find pattern 32+ 4 + 12 = 13 Third number is related to FIRST and see 4+52 +_ number. How? = 21 Fourth number is related to third nuni 5++ + 30 = 31 How? 6+7 +_=_

5.

74) RS. 1600Derweer two numbers is 2:3. I each number is increased by 4. the ratio becomes 5Then ist number is1352) 163) 244) 32thritici

Answer»

Answer:

7

4) RS. 1600

Derweer two numbers is 2:3. I each number is increased by 4. the ratio becomes 5

Then ist number is

135

2) 16

3) 24

4) 32

tthritici GGG I will be there at 7 pm

Step-by-step explanation:

6. USING the GIVEN pattern, find the missing numbers.

1²+2 + 2 = 3²

2²+ 3² + 6 = 7

To find pattern

32+ 4 + 12 = 13

Third number is related to FIRST and see

4+52 +_

number. How?

= 21

Fourth number is related to third nuni

5++ + 30 = 31

How?

6+7 +_=_

Discussion

6.	The perimeter of square is 72 cm each side of the square measure
Answer» Answer: 18 Step-by-step explanation: peri of square=4L 72=4L 72/4=L 18=L PLEASE PRESS the THANKS button I Will SOLVE your PROBLEM please co-operate thanks for watching

6.

The perimeter of square is 72 cm each side of the square measure

Answer»

Answer:

18

Step-by-step explanation:

peri of square=4L

72=4L

72/4=L

18=L

PLEASE PRESS the THANKS button

I Will SOLVE your PROBLEM please co-operate

thanks for watching

Discussion

7.	What will come in place of blank in the following series!16, 20, 29, 45, 70, 106,__(a) 155(b) 172(c) 184(d) 196..I will add as brainlist..I had answer but no process..I need correct process..With step by step explanation.
Answer» let it START from 16 itself so, 20-16 =4 =2² again 29-20=9=3² again 45-29=16=4² . . . . and it CONTINUES If you continue the same PROCESS then you can create the series before 16 too

7.

What will come in place of blank in the following series!16, 20, 29, 45, 70, 106,__(a) 155(b) 172(c) 184(d) 196..I will add as brainlist..I had answer but no process..I need correct process..With step by step explanation.

Answer»

let it START from 16 itself

so,

20-16 =4 =2²

again

29-20=9=3²

again

45-29=16=4²

.

and it CONTINUES

If you continue the same PROCESS then you can create the series before 16 too

Discussion

8.	What is meant by 10 raise to _12
Answer» Answer: 1/10^12 Step-by-step EXPLANATION: NEGATIVE POWERS are the RECIPROCAL of that number. So 10^-12 = 1/10^12

8.

What is meant by 10 raise to _12

Answer»

Answer:

1/10^12

Step-by-step EXPLANATION:

NEGATIVE POWERS are the RECIPROCAL of that number.

So 10^-12

= 1/10^12

Discussion

9.	Plz answer fast........
Answer» ANSWER: It Is X 4 Step-by-step EXPLANATION: Your WELCOME

9.

Plz answer fast........

Answer»

ANSWER:

It Is X

4

Step-by-step EXPLANATION:

Your WELCOME

Discussion

10.	What time should be 3 hours 23 minutes before 4:10pm
Answer» ANSWER: the answer should be 12:48 PM

10.

What time should be 3 hours 23 minutes before 4:10pm

Answer»

ANSWER:

the answer should be 12:48 PM

Discussion

11.	D. Polyesterb. Nylon4. Hydrophillic meansa. absorb moistureb. repel moisturec. partially absorb moistured. none of these5. Polyamide fibre isa. nylonb. polyesterc. dacronDactice that retain their placticiton repeated heating are calledd. acrylic
Answer» Answer: 4) (C) 5)(B) Step-by-step explanation: it is a answer so it is a answer please PRESS on thanks please support me for NEXT answers thanks for watching

11.

D. Polyesterb. Nylon4. Hydrophillic meansa. absorb moistureb. repel moisturec. partially absorb moistured. none of these5. Polyamide fibre isa. nylonb. polyesterc. dacronDactice that retain their placticiton repeated heating are calledd. acrylic

Answer»

Answer:

4) (C)

5)(B)

Step-by-step explanation:

it is a answer so it is a answer

please PRESS on thanks

please support me for NEXT answers

thanks for watching

Discussion

12.	If P= 17x³ +15x²-7x +9, Q = -10x³-5x²+2x+1 and R= 11x³-6x² +5x+11 ,then findP+R-Q.
Answer» ANSWER: ADD all the TERMS

12.

If P= 17x³ +15x²-7x +9, Q = -10x³-5x²+2x+1 and R= 11x³-6x² +5x+11 ,then findP+R-Q.

Answer»

ANSWER: ADD all the TERMS

Discussion

13.	Find the area of a circle whose radius is 28 (use π=22/7)
Answer» ANSWER: PLEASE MARK as BRAINLIEST answer.

13.

Find the area of a circle whose radius is 28 (use π=22/7)

Answer»

ANSWER:

PLEASE MARK as BRAINLIEST answer.

Discussion

14.	Find the ratio of cosec 60° and cot 60°
Answer» Answer: 2 Step-by-step EXPLANATION: Cosec60=1/sin60 Cot60=cos60/sin60 Cosec60/cot60=sec60 Sec60=2 Hence, ANS is 2

14.

Find the ratio of cosec 60° and cot 60°

Answer»

Answer:

2

Step-by-step EXPLANATION:

Cosec60=1/sin60

Cot60=cos60/sin60

Cosec60/cot60=sec60

Sec60=2

Hence,

ANS is 2

Discussion

15.	Whats 9 + 10 ....................... please tell fast
Answer» Answer: 9 + 10 = 19 Hope it HELPS!!

15.

Whats 9 + 10 ....................... please tell fast

Answer»

Answer:

9 + 10 = 19

Hope it HELPS!!

Discussion

16.	Give value of three coins that were used in earlier times
Answer» ANSWER: the VALUE is BASED on the TYPE of METAL

16.

Give value of three coins that were used in earlier times

Answer»

ANSWER:

the VALUE is BASED on the TYPE of METAL

Discussion

17.	Find the circumference of a circle whose area is 4 times the area of a circle with diameter 21 cm
Answer» ANSWER: The CIRCUMFERENCE of the GREATER CIRCLE is 219

17.

Find the circumference of a circle whose area is 4 times the area of a circle with diameter 21 cm

Answer»

ANSWER:

The CIRCUMFERENCE of the GREATER CIRCLE is 219

Discussion

18.	Please give me answer of this questionediting errors correction
Answer» Answer: KHUD SE try kar lo SAMJH me nahi aa rha h KI tum ne puchha kya h

18.

Please give me answer of this questionediting errors correction

Answer»

Answer:

KHUD SE try kar lo SAMJH me nahi aa rha h KI tum ne puchha kya h

Discussion

19.	The difference between simple interest and compound interest on the same sum of moneyat 5% per annum for 2 years is 15. Determine the sum.
Answer» ANSWER: 5/100 ×2×15 do answer will COME

19.

The difference between simple interest and compound interest on the same sum of moneyat 5% per annum for 2 years is 15. Determine the sum.

Answer»

ANSWER:

5/100 ×2×15 do answer will COME

Discussion

20.	Maths.....A question for you.......A tap can fill a tank in 6 hours, what part of the tank filled in one hour???...
Answer» Step-by-step explanation: TAKE 1 by 6 and SOLVE it ll GIVE U ans

20.

Maths.....A question for you.......A tap can fill a tank in 6 hours, what part of the tank filled in one hour???...

Answer»

Step-by-step explanation:

TAKE 1 by 6 and SOLVE it ll GIVE U ans

Discussion

21.	C AB = 6.5 cm, BC = 4.5 cm, CD = 4 cm. AD = 5 cm and B = 60d. AB = 2.5 cm, BC = 3.1 cm, CD = 4.3 cm, AC = 5.7 cm and ZA= 1206 Construct a quadrilateral ABCD in which AB = 4 cm. BC = 3 cm, B = 90°
Answer» Step-by-step EXPLANATION: QUESTION 2 IS INCORRECT.

21.

C AB = 6.5 cm, BC = 4.5 cm, CD = 4 cm. AD = 5 cm and B = 60d. AB = 2.5 cm, BC = 3.1 cm, CD = 4.3 cm, AC = 5.7 cm and ZA= 1206 Construct a quadrilateral ABCD in which AB = 4 cm. BC = 3 cm, B = 90°

Answer»

Step-by-step EXPLANATION:

QUESTION 2 IS INCORRECT.

Discussion

22.	Find the answer of the question
Answer» ANSWER: A will be a SQUARE MATRIX

22.

Find the answer of the question

Answer»

ANSWER:

A will be a SQUARE MATRIX

Discussion

23.	1 divided by 2 + root 5 + 1 divided by root 5 + root 6 +1 divided by whole root 6 + root 7
Answer» ANSWER: don't KNOW SORRY sorry sorry ☹️☹️☹️

23.

1 divided by 2 + root 5 + 1 divided by root 5 + root 6 +1 divided by whole root 6 + root 7

Answer»

ANSWER:

don't KNOW SORRY sorry sorry ☹️☹️☹️

Discussion

24.	Factories x^2-x-56.
Answer» Step-by-step EXPLANATION: x^2-x-56 =x^2-8x+7x-56 =x(x-8)+7(x-8) =(x+7)(x-8)

24.

Factories x^2-x-56.

Answer»

Step-by-step EXPLANATION:

x^2-x-56

=x^2-8x+7x-56

=x(x-8)+7(x-8)

=(x+7)(x-8)

Discussion

25.	F(x) = 2x2 + (P + 3}x + 5 என்னும் பல்லுறுப்புக்கோவையின் இருபூச்சியங்களின் கூடுதல் பூச்சியம் எனில் -- இன் மதிப்பு(A), 3 ((B) 4(C)'-3 (D) -4
Answer» ANSWER: ye kon SI LANGUAGE h kya likha h ENGLISH me TYPE kar

25.

F(x) = 2x2 + (P + 3}x + 5 என்னும் பல்லுறுப்புக்கோவையின் இருபூச்சியங்களின் கூடுதல் பூச்சியம் எனில் -- இன் மதிப்பு(A), 3 ((B) 4(C)'-3 (D) -4

Answer»

ANSWER:

ye kon SI LANGUAGE h kya likha h ENGLISH me TYPE kar

Discussion

26.	Solve sinx^2 by first principle method.
Answer» Answer: F(x) = sin (x) f(x+h) = sin(x+h) From first PRINCIPLE, d(f(x))/DX = lim h->0 [ f(x+h) - f(x) ] /h Now, d(sinx)/dx = lim h->0 sin(x+h) - sin(x) / h = lim h->0 2 cos ( x + h/2) sin h/2 / h = lim h->0 (2/2) (cos ( x + h/2) )* (sin h/2 / h/2) = Lim h->0 cos ( x + h/2) = cos x Hence PROVED from first principle that d(sin x)/dx = cos x

26.

Solve sinx^2 by first principle method.

Answer»

Answer:

F(x) = sin (x)

f(x+h) = sin(x+h)

From first PRINCIPLE,

d(f(x))/DX = lim h->0 [ f(x+h) - f(x) ] /h

Now,

d(sinx)/dx = lim h->0 sin(x+h) - sin(x) / h

= lim h->0 2 cos ( x + h/2) sin h/2 / h

= lim h->0 (2/2) (cos ( x + h/2) )* (sin h/2 / h/2)

= Lim h->0 cos ( x + h/2)

= cos x

Hence PROVED from first principle that

d(sin x)/dx = cos x

Discussion

27.	Estion:aluate each of the foltt/21. sin? x dx.
Answer» ANSWER: don't *understand* UR QUESTION** probably

27.

Estion:aluate each of the foltt/21. sin? x dx.

Answer»

ANSWER:

don't understand UR QUESTION probably

Discussion

28.	If f of X is equals to 5 x + 6 by 7 x + 9 then f inverse equals to
Answer» Answer: Step-by-step explanation: Given $<klux>F</klux>(<klux>X</klux>)=\frac{5x+<klux>6</klux>}{7x+9}$ Let $y=\frac{5x+6}{7x+9}$ Let's solve for x y(7x + 9) = 5x + 6 7xy + 9y = 5x + 6 7xy - 5x = 6 - 9y x(7y - 5) = 6 - 9y $x=\frac{6-9y}{7y-5}$ Since, y = f(x), this implies that $x=f^{-1} (y)$ , so $f^{-1}(y) =\frac{6-9y}{7y-5}$ So, the inverse of f is $f^{-1}(x) =\frac{6-9x}{7x-5}$

28.

If f of X is equals to 5 x + 6 by 7 x + 9 then f inverse equals to

Answer»

Answer:

Step-by-step explanation: Given

$<klux>F</klux>(<klux>X</klux>)=\frac{5x+<klux>6</klux>}{7x+9}$

Let $y=\frac{5x+6}{7x+9}$

Let's solve for x

y(7x + 9) = 5x + 6

7xy + 9y = 5x + 6

7xy - 5x = 6 - 9y

x(7y - 5) = 6 - 9y

$x=\frac{6-9y}{7y-5}$

Since, y = f(x), this implies that $x=f^{-1} (y)$ , so

$f^{-1}(y) =\frac{6-9y}{7y-5}$

So, the inverse of f is

$f^{-1}(x) =\frac{6-9x}{7x-5}$

Discussion

29.	What is the ratio of area of two triangles with common base and equal height?(a) 1:2(b) 1:1 (c) 2:1 (d) none of these
Answer» ANSWER: the answer should be (B)1:1

29.

What is the ratio of area of two triangles with common base and equal height?(a) 1:2(b) 1:1 (c) 2:1 (d) none of these

Answer»

ANSWER:

the answer should be (B)1:1

Discussion

30.	Solve this question with full solution and get 25 points
Answer» ANSWER: ADD all the NUMBERS and you will GET answer 28

30.

Solve this question with full solution and get 25 points

Answer»

ANSWER:

ADD all the NUMBERS and you will GET answer 28

Discussion

31.	What percentage is 4/3 kg of 50 kg
Answer» Step-by-step explanation: $50 \times 3 \div 4$ 1875

31.

What percentage is 4/3 kg of 50 kg

Answer»

Step-by-step explanation:

$50 \times 3 \div 4$

1875

Discussion

32.	The total number of perfect square numbers lying 300and 3000
Answer» ANSWER: I don't KNOW PLZ you can FOLLOW me PLZZZZZZZZ

32.

The total number of perfect square numbers lying 300and 3000

Answer»

ANSWER:

I don't KNOW PLZ you can FOLLOW me PLZZZZZZZZ

Discussion

33.	15. Amarjeet has three boxes of different fruits. Box A weight 2 1/2 kg more thanBox B and Box C weight 10 1/4 kg more than Box B. If the total weight of thethree boxes in 48 3/4 kg. Find the weight of Box A.
Answer» ANSWER: ............ . . ........

33.

15. Amarjeet has three boxes of different fruits. Box A weight 2 1/2 kg more thanBox B and Box C weight 10 1/4 kg more than Box B. If the total weight of thethree boxes in 48 3/4 kg. Find the weight of Box A.

Answer»

ANSWER:

............ . . ........

Discussion

34.	How much wire is required to fence a rectangular field 1km long and 500m board
Answer» Answer: here is UR answer Step-by-step EXPLANATION: length=1km=1000m Breadth=500m A. T. Q Peramiter =2(l+b) =2(1000+500) =3000m or3km MRK me as BRAINLIST

34.

How much wire is required to fence a rectangular field 1km long and 500m board

Answer»

Answer:

here is UR answer

Step-by-step EXPLANATION:

length=1km=1000m

Breadth=500m

A. T. Q

Peramiter =2(l+b)

=2(1000+500)

=3000m

or3km

MRK me as BRAINLIST

Discussion

35.	How long will it take for rupees 2500 invested at the rate of 9% per annum simple interest toamount to 3100
Answer» <P>Answer: 2.66 years Step-by-step explanation: Principal= Rs.2500 Rate of interest=9% Time = n (to be FOUND out ) Amount to be made = Rs.3100 S.I = P x R x T /100 Amount= Principal + Interest 3100=2500+(2500 x 9 x n/100) 3100-2500=25 x 9 x n. (2500/100=25) 600=225n n=600÷225 n=2.66

35.

How long will it take for rupees 2500 invested at the rate of 9% per annum simple interest toamount to 3100

Answer»

<P>Answer:

2.66 years

Step-by-step explanation:

Principal= Rs.2500

Rate of interest=9%

Time = n (to be FOUND out )

Amount to be made = Rs.3100

S.I = P x R x T /100

Amount= Principal + Interest

3100=2500+(2500 x 9 x n/100)

3100-2500=25 x 9 x n. (2500/100=25)

600=225n

n=600÷225

n=2.66

Discussion

36.	What is the square root of 2²×3⁴×8²?
Answer» ANSWER: PLEASE MARK as BRAINLIEST answer.

36.

What is the square root of 2²×3⁴×8²?

Answer»

ANSWER:

PLEASE MARK as BRAINLIEST answer.

Discussion

37.	In an A.P,if common difference is 3,then a3-a9=_____A) -6B) 6C) -2D) 2
Answer» Answer:- -18 Step-by-step EXPLANATION: this is the answer if U want explanation mark me the brainliest

37.

In an A.P,if common difference is 3,then a3-a9=_____A) -6B) 6C) -2D) 2

Answer»

Answer:-

-18

Step-by-step EXPLANATION:

this is the answer if U want explanation mark me the brainliest

Discussion

38.	4. Maria wants to make an open cuboidal box, 10 cm long, 5 cm wide and 3 cm high from acardboard. Find the cost of the cardboard at the rate of 50 paisa per cm-.
Answer» ANSWER:₹ 75 Ste10×5×3×0.5explanati

38.

4. Maria wants to make an open cuboidal box, 10 cm long, 5 cm wide and 3 cm high from acardboard. Find the cost of the cardboard at the rate of 50 paisa per cm-.

Answer»

ANSWER:₹ 75

Ste10×5×3×0.5explanati

Discussion

39.	Find the missing term? 1.CP=?,Sp=r2900,profit=r100,loss=?
Answer» ANSWER: because PROFIT is GIVEN , so no LOSS but for CP , we KNOW SP-P So , CP = 2800

39.

Find the missing term? 1.CP=?,Sp=r2900,profit=r100,loss=?

Answer»

ANSWER:

because PROFIT is GIVEN , so no LOSS

but for CP , we KNOW SP-P

So , CP = 2800

Discussion

40.	Aa-4a-1=0,find the value of aa+1/a*a+3a-3/a
Answer» Answer: Step-by-step EXPLANATION: The answer can be found very quickly. a2-4a-1=0; Let us divide both sides by a. Since we are to FIND a-1/a, a≠0, otherwise the EXPRESSION a-1/a is not defined at all. After the abovementioned division by a we will obtain: a-4-1/a=0; Now combine first and LAST term TOGETHER, (a-1/a)-4=0. Move 4 to the right, to obtain a-1/a=4 This is your answer. Done. Mark as brainlist ♀️

40.

Aa-4a-1=0,find the value of aa+1/a*a+3a-3/a

Answer»

Answer:

Step-by-step EXPLANATION:

The answer can be found very quickly.

a2-4a-1=0; Let us divide both sides by a. Since we are to FIND a-1/a, a≠0, otherwise the EXPRESSION a-1/a is not defined at all. After the abovementioned division by a we will obtain:

a-4-1/a=0; Now combine first and LAST term TOGETHER, (a-1/a)-4=0. Move 4 to the right, to obtain

a-1/a=4

This is your answer. Done.

Mark as brainlist ♀️

Discussion

41.	B is daughter of the wife of A's mother only son.What is the relation between B and A.
Answer» ANSWER: PLS MARK as brainliest Step-by-step explanation: B is A's WIFE.

41.

B is daughter of the wife of A's mother only son.What is the relation between B and A.

Answer»

ANSWER:

PLS MARK as brainliest

Step-by-step explanation:

B is A's WIFE.

Discussion

42.	A circular park of radius 12 cm has a road of 4 cm width all around it's outside. Find the area of the road
Answer» r = 12 CM R = r+4 = 12+4 = 16 cm *area* of *road* = *area* of *big* *CIRCLE* - *area* of *small* *circle* = πR^2-πr^2 = π{ 16^2-12^2) = 22/7 ( 256-144) = 22/7× 112 = 22×16 = 352 cm ^2 *ans* *hope* *it'll* *help* *you*......

42.

A circular park of radius 12 cm has a road of 4 cm width all around it's outside. Find the area of the road

Answer»

r = 12 CM

R = r+4 = 12+4 = 16 cm

area of road = area of big CIRCLE - area of small circle

= πR^2-πr^2

= π{ 16^2-12^2)

= 22/7 ( 256-144)

= 22/7× 112

= 22×16

= 352 cm ^2 ans

hope it'll help you......

Discussion

43.	find the value of A and B if root 2 + 1 divided by root 2 minus 1 minus root 2 minus 1 root 2 + 1 is equals to a + root 2 b
Answer» ANSWER: Step-by-step EXPLANATION: PLZZ MARK as BRAINLIEST....

43.

find the value of A and B if root 2 + 1 divided by root 2 minus 1 minus root 2 minus 1 root 2 + 1 is equals to a + root 2 b

Answer»

ANSWER:

Step-by-step EXPLANATION:

PLZZ MARK as BRAINLIEST....

Discussion

44.	Find the radius of the circle if its circumference is 88cm
Answer» ANSWER: circumference of circle=2πr 88. =2×22/7×r 88/2. =22/7×r 44. = 22/7×r 44×7. =22×r 308. =22×r 308/22=r 14=r The radius is 14cm

44.

Find the radius of the circle if its circumference is 88cm

Answer»

ANSWER:

circumference of circle=2πr

88. =2×22/7×r

88/2. =22/7×r

44. = 22/7×r

44×7. =22×r

308. =22×r

308/22=r

14=r

The radius is 14cm

Discussion

45.	9 பேர் ஓர் உணவகம் சென்றனர். 8 பேர் தங்களுடைய சாப்பாட்டுச் செலவாகஆளுக்கு ரூ 30 செலவழித்தனர். 9 வது நபர் எல்லோருடைய சராசரி செலவைவிட 20 ரூபாய் கூடுதலாகச் செலவு செய்தார் எனில், அவர்கள் செலவழித்தமொத்தப் பணம் எவ்வளவு?(A) ரூபாய் 292.50(B) ரூபாய் 272.50(C) ரூபாய் 312.50(D) ரூபாய் 325.50
Answer» Given :- Nine persons went to a HOTEL for taking their meals. 8 of them spent Rs.30 each on their meals and the ninth spent Rs.20 more than the average expenditure of all the nine. What was the total money spent by them ? A) Rs. 292.50 B) Rs. 272.50 C) Rs. 312.50 D) Rs. 325.50 Solution :- Let the average expenditure of all of them is Rs.x . Then, → The money spent by 9TH person = Rs.20 more than the average expenditure of all the nine = Rs.(x + 20) . So, → Average expenditure = (sum of equal expenditure by 8 person and the expenditure by the 9th person) / (Total number of Person) . Therefore, → x = [8 * 30 + (x + 20)] / 9 → 9x = 240 + (x + 20) → 9x = x + 260 → 9x - x = 260 → 8x = 260 → x = 32.5 . Hence, → Total money spent by all of them = (260 + x) = 260 + 32.5 = Rs.292.5 (Ans.) (Option A). Learn more :- in an election among three BEN Carl and mark Ben gets half of the vote of Carl . mark BEATS Carl by 300000 votes .carl b... brainly.in/question/26163588 There were two candidates for the presidentship in a student's union election of the university, 15% students did not ca... brainly.in/question/15468511?utm_source=android&utm_medium=share&utm_campaign=question

45.

9 பேர் ஓர் உணவகம் சென்றனர். 8 பேர் தங்களுடைய சாப்பாட்டுச் செலவாகஆளுக்கு ரூ 30 செலவழித்தனர். 9 வது நபர் எல்லோருடைய சராசரி செலவைவிட 20 ரூபாய் கூடுதலாகச் செலவு செய்தார் எனில், அவர்கள் செலவழித்தமொத்தப் பணம் எவ்வளவு?(A) ரூபாய் 292.50(B) ரூபாய் 272.50(C) ரூபாய் 312.50(D) ரூபாய் 325.50

Answer»

Given :- Nine persons went to a HOTEL for taking their meals. 8 of them spent Rs.30 each on their meals and the ninth spent Rs.20 more than the average expenditure of all the nine. What was the total money spent by them ?

A) Rs. 292.50

B) Rs. 272.50

C) Rs. 312.50

D) Rs. 325.50

Solution :-

Let the average expenditure of all of them is Rs.x .

Then,

→ The money spent by 9TH person = Rs.20 more than the average expenditure of all the nine = Rs.(x + 20) .

So,

→ Average expenditure = (sum of equal expenditure by 8 person and the expenditure by the 9th person) / (Total number of Person) .

Therefore,

→ x = [8 * 30 + (x + 20)] / 9

→ 9x = 240 + (x + 20)

→ 9x = x + 260

→ 9x - x = 260

→ 8x = 260

→ x = 32.5 .

Hence,

→ Total money spent by all of them = (260 + x) = 260 + 32.5 = Rs.292.5 (Ans.) (Option A).

Learn more :-

in an election among three BEN Carl and mark Ben gets half of the vote of Carl . mark BEATS Carl by 300000 votes .carl b...

brainly.in/question/26163588

There were two candidates for the presidentship in a student's union election of the university,

15% students did not ca...

brainly.in/question/15468511?utm_source=android&utm_medium=share&utm_campaign=question

Discussion

46.	What principal will amount to RS. 87373 in 6 years at 5% per annum?
Answer» Answer: 23722838462947239263

46.

What principal will amount to RS. 87373 in 6 years at 5% per annum?

Answer»

Answer:

23722838462947239263

Discussion

47.	The picture given below shows the face of aclock. When the time is 10:10, the hourhand and the minute hand form angle xand minute hand and second hand formangle z, whereas hour hand and secondhand form angle y. Then, prove thatx=2+2
Answer» Answer:115° Step-by-step explanation: Each circle has 360°. Each hour has 60 min. It MEANS each min. The minute hand moves by 360/60 =6° Each CLOCK has 12 hours. It means each hour has 30° each. It means in every minute the hour hand moves by 0.5 °. Therefore, the angle formed is (10 to 11)+(11 to 12) +(12to 1) +(1 to 2) (30-5)+30+30+30 25+30+30+30 115°

47.

The picture given below shows the face of aclock. When the time is 10:10, the hourhand and the minute hand form angle xand minute hand and second hand formangle z, whereas hour hand and secondhand form angle y. Then, prove thatx=2+2

Answer»

Answer:115°

Step-by-step explanation:

Each circle has 360°.

Each hour has 60 min.

It MEANS each min. The minute hand moves by 360/60 =6°

Each CLOCK has 12 hours.

It means each hour has 30° each.

It means in every minute the hour hand moves by 0.5 °.

Therefore, the angle formed is

(10 to 11)+(11 to 12) +(12to 1) +(1 to 2)

(30-5)+30+30+30

25+30+30+30

115°

Discussion

48.	Jason gets a student loan for 30,000 dollars. He gets an engineering job for 500 dollars every 2 weeks. How many weeks does he have to work there to pay off his student loan
Answer» ANSWER: ASK with YOIR TUTOR..............................

48.

Jason gets a student loan for 30,000 dollars. He gets an engineering job for 500 dollars every 2 weeks. How many weeks does he have to work there to pay off his student loan

Answer»

ANSWER:

ASK with YOIR TUTOR..............................

Discussion

49.	kishanChand deposited rupees 50,000 in a bank at 10% compound interest for 2 years. lalchand invested rupees 125000 after 2 years. whose is investment turned out to be more profitable.
Answer» HELLO BUDDY

49.

kishanChand deposited rupees 50,000 in a bank at 10% compound interest for 2 years. lalchand invested rupees 125000 after 2 years. whose is investment turned out to be more profitable.

Answer»

HELLO BUDDY

Discussion

50.	Add the folloeing rational numbers in3/-7and 1/7
Answer» ANSWER: -2/7 Step-by-step explanation: 3/-7 + 1/7 = -3/7 + 1/7 = -3 + 1 /7 = -2/7

50.

Add the folloeing rational numbers in3/-7and 1/7

Answer»

ANSWER:

-2/7

Step-by-step explanation:

3/-7 + 1/7

= -3/7 + 1/7

= -3 + 1 /7

= -2/7

Discussion

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