332354 + Interview Questions in Secondary School in Math

1.	a bag contain rs 600 in the form of rs1, 50p, 25p in the ratio of 3:4:12. the number of 25p coins is
Answer» Answer: RS 600 = 60000 p Sum of the RATIO = 3+4+12 = 19 The no. of 25 paise coins is = 12/19*600000

1.

a bag contain rs 600 in the form of rs1, 50p, 25p in the ratio of 3:4:12. the number of 25p coins is

Answer»

Answer:

RS 600 = 60000 p

Sum of the RATIO = 3+4+12 = 19

The no. of 25 paise coins is = 12/19*600000

Discussion

2.	Kajal sleep 8hr in a day what fraction of a day does she sleep
Answer» Answer: 8/24 this is the FRACTION of this

2.

Kajal sleep 8hr in a day what fraction of a day does she sleep

Answer»

Answer:

8/24

this is the FRACTION of this

Discussion

3.	Fill in the blank ___ - 1/5=1/2
Answer» Answer: 7/10 Step-by-step EXPLANATION: LET the FRACTION be 'X' x-1/5=1/2 x=1/2+1/5 =5+2/10 =7/10

3.

Fill in the blank ___ - 1/5=1/2

Answer»

Answer:

7/10

Step-by-step EXPLANATION:

LET the FRACTION be 'X'

x-1/5=1/2

x=1/2+1/5

=5+2/10

=7/10

Discussion

4.	If one root of x2+ax+27=0 is the square of the other then find a
Answer» Answer: a=-12 Step-by-step explanation: TAKE the two ROOTS as ALPHA and instead of beta take it as alpha square

4.

If one root of x2+ax+27=0 is the square of the other then find a

Answer»

Answer:

a=-12

Step-by-step explanation:

TAKE the two ROOTS as ALPHA and instead of beta take it as alpha square

Discussion

5.	N = 10 , d = -10 , sn = 4500 using the formula of sn
Answer» ANSWER: can you PLEASE MENTION what we should FIND

5.

N = 10 , d = -10 , sn = 4500 using the formula of sn

Answer»

ANSWER:

can you PLEASE MENTION what we should FIND

Discussion

6.	????? i dont get this...
Answer» Answer: 12 inches=30 cm r=15 cm area=3.14×15×15 = 706.5 cm^2 =0.07065 m^2 also, area=3.14 SQ FEET

6.

????? i dont get this...

Answer»

Answer:

12 inches=30 cm

r=15 cm

area=3.14×15×15

= 706.5 cm^2

=0.07065 m^2

also,

area=3.14 SQ FEET

Discussion

7.	If A(4, – 3), B(3, – 2) and C(2, 8) are vertices of a triangle, then the distance of it's centroid from the y-axis is
Answer» $Let \: A(4,-3) = (x_{1} , y_{1}) , \\ B(3,-2) = (x_{2} , y_{2}) , \: C(2,8) = (x_{3} , y_{3}) \\ are \: Vertices \\of \: \triangle ABC$ $Centroid (G) = \Big( \frac{x_{1}+x_{2}+x_{3}}{3}, \frac{y_{1}+y_{2}+y_{3}}{3}\Big)$ $= \Big( \frac{4+3+2}{3} , \frac{-3-2+8}{3}\Big) \\= \Big( \frac{9}{3} , \frac{3}{3}\Big) \\= ( 3 , 1 )$ $Now, Distance \:of \: Centroid \:from \:the \\y-axis = x - coordinate \:of \: G \\= 3$ THEREFORE., $\red {Distance \:of \: Centroid \:from \:the }$ $\red {y-axis} \green { = 3 }$ •••♪

7.

If A(4, – 3), B(3, – 2) and C(2, 8) are vertices of a triangle, then the distance of it's centroid from the y-axis is

Answer»

$Let \: A(4,-3) = (x_{1} , y_{1}) , \\ B(3,-2) = (x_{2} , y_{2}) , \: C(2,8) = (x_{3} , y_{3}) \\ are \: Vertices \\of \: \triangle ABC$

$Centroid (G) = \Big( \frac{x_{1}+x_{2}+x_{3}}{3}, \frac{y_{1}+y_{2}+y_{3}}{3}\Big)$

$= \Big( \frac{4+3+2}{3} , \frac{-3-2+8}{3}\Big) \\= \Big( \frac{9}{3} , \frac{3}{3}\Big) \\= ( 3 , 1 )$

$Now, Distance \:of \: Centroid \:from \:the \\y-axis = x - coordinate \:of \: G \\= 3$

THEREFORE.,

$\red {Distance \:of \: Centroid \:from \:the }$

$\red {y-axis} \green { = 3 }$

•••♪

Discussion

8.	1+3+5+7+_+25=chapter squares and square root
Answer» Answer: 1+3+5+7+a+25=y Step-by-step explanation: 41+a=y if a=1 then , 41+1 =42 42 is not a SQUARE if a= 8 then , 41+8 = 49 49 is square

8.

1+3+5+7+_+25=chapter squares and square root

Answer»

Answer:

1+3+5+7+a+25=y

Step-by-step explanation:

41+a=y

if a=1

then ,

41+1 =42

42 is not a SQUARE

if a= 8

then ,

41+8 = 49

49 is square

Discussion

9.	Find Dy/DX x^3+y^3=9xy
Answer» ANSWER: Step-by-step EXPLANATION:

9.

Find Dy/DX x^3+y^3=9xy

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

10.	Find side of a cube whose total surface area 96square cm find also it volume
Answer» ANSWER: bhai 6a2 SAI equate kr DE side aajyega or USKA cube KRDE vollumn aaojyag

10.

Find side of a cube whose total surface area 96square cm find also it volume

Answer»

ANSWER:

bhai 6a2 SAI equate kr DE side aajyega or USKA cube KRDE vollumn aaojyag

Discussion

11.	An article has marked price of 20,000.The shopkeeper gives a discount of10% and charges GST at 12%. Findthe price paid by the consumer. [3]
Answer» Answer: 20160 is the AMOUNT PAID by the CUSTOMER to the SHOP KEEPER

11.

An article has marked price of 20,000.The shopkeeper gives a discount of10% and charges GST at 12%. Findthe price paid by the consumer. [3]

Answer»

Answer:

20160 is the AMOUNT PAID by the CUSTOMER to the SHOP KEEPER

Discussion

12.	7. Two circles having the same centre have radii 350 m and 490 m. What is the differencebetween their circumferences?
Answer» ANSWER: I HOPE you have GOT the answer.

12.

7. Two circles having the same centre have radii 350 m and 490 m. What is the differencebetween their circumferences?

Answer»

ANSWER:

I HOPE you have GOT the answer.

Discussion

13.	If only the first tap is opened what fraction of the tank would be filled in one minute
Answer» Answer: 1/60 .... HOPE this HELPS. . . . .

13.

If only the first tap is opened what fraction of the tank would be filled in one minute

Answer»

Answer:

1/60 ....

HOPE this HELPS. . . . .

Discussion

14.	Find the 7th term of expansion in (3x-4y)^9
Answer» ANSWER: Step-by-step EXPLANATION:

14.

Find the 7th term of expansion in (3x-4y)^9

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

15.	If A=2+1/a and B=a+1/2,if A=B then what should be the value of a?
Answer» ANSWER: Given, A=2+1/a B=a+1/2 Also, A=B So,2+1/a=a+1/2 3/a=a+1/2 By cross MULTIPLYING, 6=a^2+1 a^2+1-6=0 P= -6, s= 1 a^2+3x-2x-6=0 a(a+3)-2(a+3)=0 (a-2)(a+3) THEREFORE, a= 3, a= -2 Hope this HELPS you!!!!!

15.

If A=2+1/a and B=a+1/2,if A=B then what should be the value of a?

Answer»

ANSWER:

Given, A=2+1/a B=a+1/2

Also, A=B

So,2+1/a=a+1/2

3/a=a+1/2

By cross MULTIPLYING,

6=a^2+1

a^2+1-6=0

P= -6, s= 1

a^2+3x-2x-6=0

a(a+3)-2(a+3)=0

(a-2)(a+3)

THEREFORE, a= 3, a= -2

Hope this HELPS you!!!!!

Discussion

16.	If PS\|\|RS and P(1,-2), Q(5,2), R(3,k) and S(k,-5). Find the value of K by using the formula of slope of line.HINT:- SEE THE IMAGE.....
Answer» ANSWER: Step-by-step EXPLANATION:

16.

If PS||RS and P(1,-2), Q(5,2), R(3,k) and S(k,-5). Find the value of K by using the formula of slope of line.HINT:- SEE THE IMAGE.....

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

17.	Solve Plz This Question
Answer» Step-by-step EXPLANATION: AVERAGE =TOTAL distance/total TIME = 25/35 then INVERSE =35/25 =7/5

17.

Solve Plz This Question

Answer»

Step-by-step EXPLANATION:

AVERAGE =TOTAL distance/total TIME

= 25/35

then

INVERSE =35/25 =7/5

Discussion

18.	Is the price of petrol diesel lpg is so desperate45.62,40
Answer» ANSWER: no, the PRICE of the petrool is HIGH now a DAYS

18.

Is the price of petrol diesel lpg is so desperate45.62,40

Answer»

ANSWER:

no, the PRICE of the petrool is HIGH now a DAYS

Discussion

19.	Find the value of for the following quadrateick equation 4x+py+8=0 2x+2y+2=0
Answer» ANSWER: are the lines are PARALLEL,COINCIDENT,or INTERSECTING please mention

19.

Find the value of for the following quadrateick equation 4x+py+8=0 2x+2y+2=0

Answer»

ANSWER:

are the lines are PARALLEL,COINCIDENT,or INTERSECTING please mention

Discussion

20.	Change to decimal by devison 11 13/25
Answer» ANSWER: ????not ABLE to UNDERSTAND the QUESTION onlY __???

20.

Change to decimal by devison 11 13/25

Answer»

ANSWER:

????not ABLE to UNDERSTAND the QUESTION onlY __???

Discussion

21.	Using the formula of Sn
Answer» ANSWER: sn= Step-by-step EXPLANATION: n/2[2a+(n-1)d] plz MARK as brainliest

21.

Using the formula of Sn

Answer»

ANSWER:

sn=

Step-by-step EXPLANATION:

n/2[2a+(n-1)d]

plz MARK as brainliest

Discussion

22.	The perimeter of a sector is 4times the radius of it.find the area of sector...
Answer» ANSWER:are of sector is R^2 Step-by-step EXPLANATION: LET x be ANGLE formed by radius Perimeter of sector = 4R R + R +(x÷360×2πR)=4R x÷180×π=2 X=360/π Are of sector=x/360×πR×R 360/π×π/360×R×R =R square=R^2=R×R

22.

The perimeter of a sector is 4times the radius of it.find the area of sector...

Answer»

ANSWER:are of sector is R^2

Step-by-step EXPLANATION:

LET x be ANGLE formed by radius

Perimeter of sector = 4R

R + R +(x÷360×2πR)=4R

x÷180×π=2

X=360/π

Are of sector=x/360×πR×R

360/π×π/360×R×R

=R square=R^2=R×R

Discussion

23.	in a flower bed there are 23 rose plant in first row 21 in second,19 in the 3rd and so on there are 5 rose plant in the last row how many rows are there in the flower bed
Answer» Answer: There are 23 rose plant in first row,21 rose plant in second row and 19 rose plant in third row. Likewise it forms an A.P. 23,21,19,17..... with first TERM 23 and common difference -2. Now, suppose last term is 5 and there are N ROWS. So, Using CONCEPT of A.P. Last term= a+(n-1)d 5= 23+(n-1)(-2) 5= 23-2n+2 2n=20 n=10 Hence, there are 10 rows in flower bed. Hope you have understood Mark it as $\huge\underline\mathcal\red{Brainliest}$ $\huge{\boxed{\mathbb\green{\fcolorbox{red}{blue}{Thank\:You}}}}$

23.

in a flower bed there are 23 rose plant in first row 21 in second,19 in the 3rd and so on there are 5 rose plant in the last row how many rows are there in the flower bed

Answer»

Answer:

There are 23 rose plant in first row,21 rose plant in second row and 19 rose plant in third row.

Likewise it forms an A.P. 23,21,19,17..... with first TERM 23 and common difference -2.

Now, suppose last term is 5 and there are N ROWS.

So, Using CONCEPT of A.P.

Last term= a+(n-1)d

5= 23+(n-1)(-2)

5= 23-2n+2

2n=20

n=10

Hence, there are 10 rows in flower bed.

Hope you have understood

Mark it as

$\huge\underline\mathcal\red{Brainliest}$

$\huge{\boxed{\mathbb\green{\fcolorbox{red}{blue}{Thank\:You}}}}$

Discussion

24.	If mean and median of the given weights of tomato's in gram is same then find the value of x . also find mean and median.50,60,65,70,x+1,85,85,90,95
Answer» first ADD all the NUMBER than you will GET the value of x than for median make a COLUMN of c.f you will get the answer of median..

24.

If mean and median of the given weights of tomato's in gram is same then find the value of x . also find mean and median.50,60,65,70,x+1,85,85,90,95

Answer»

first ADD all the NUMBER

than you will GET the value of x than for median make a COLUMN of c.f you will get the answer of median..

Discussion

25.	12+345678(76)-76(789345+987
Answer» MEAN of FIVE NUMBER was culculated as 21.8 later it was found that Number 21 was read as 12 find the correct mean.

Discussion

26.	Factorise X square + 2 root 2 x minus 30
Answer» ANSWER: x^2+2√2x-30=0 x= -b± $\sqrt{b^2-4ac}\\$ /2a USING this formula x=-2√2±√[8+120]/2 x=-√2±11.31/2 Step-by-step EXPLANATION: PLEASE MARK AS BRAINLIEST.I NEED IT URGENTLY

26.

Factorise X square + 2 root 2 x minus 30

Answer»

ANSWER:

x^2+2√2x-30=0

x= -b± $\sqrt{b^2-4ac}\\$ /2a

USING this formula

x=-2√2±√[8+120]/2

x=-√2±11.31/2

Step-by-step EXPLANATION:

PLEASE MARK AS BRAINLIEST.I NEED IT URGENTLY

Discussion

27.	11 13 /25 change the decimal by devision
Answer» ANSWER: Step-by-step explanation:1113÷2500

27.

11 13 /25 change the decimal by devision

Answer»

ANSWER:

Step-by-step explanation:1113÷2500

Discussion

28.	Please solve it with method. No spam and fooling please
Answer» 93 9-3 EQUAL 6 $9 \times 3 = 27$ Step-by-step EXPLANATION: HOPE it's HELP

28.

Please solve it with method. No spam and fooling please

Answer»

93

9-3 EQUAL 6

$9 \times 3 = 27$

Step-by-step EXPLANATION:

HOPE it's HELP

Discussion

29.	An umbrella is made up by stitching 10 triangular pieces of cloth of two different colors, each piece measuring 20cm,50cm, and 50cm. How much cloth of each color is required for the umbrella
Answer» Answer:40mtrs Step-by-step EXPLANATION: WIDTH of 5 piece of each COLOUR is 20*40cm

29.

An umbrella is made up by stitching 10 triangular pieces of cloth of two different colors, each piece measuring 20cm,50cm, and 50cm. How much cloth of each color is required for the umbrella

Answer»

Answer:40mtrs

Step-by-step EXPLANATION:

WIDTH of 5 piece of each COLOUR is 20*40cm

Discussion

30.	Find the square root of 59
Answer»

Discussion

31.	How to solve this guys?
Answer»

Discussion

32.	D) Which of the following number is a rational number between1/5 and 1/6(i)1/2 (ii)2/13 (ii) 1/7 (iv) none of the above
Answer» ANSWER: (I) 1/2 Step-by-step EXPLANATION: the answer of this QUESTION will be (I) 1/2, because it's a RATIONAL NUMBER

32.

D) Which of the following number is a rational number between1/5 and 1/6(i)1/2 (ii)2/13 (ii) 1/7 (iv) none of the above

Answer»

ANSWER:

(I) 1/2

Step-by-step EXPLANATION:

the answer of this QUESTION will be (I) 1/2, because it's a RATIONAL NUMBER

Discussion

33.	The height of a cone is 12 cm and the radius of its base is 9 cm find the Csa of cone take π 3.14
Answer» ANSWER: the csa of cone will be 423.9 cm^2 Step-by-step explanation: The formula of CURVED SURFACE area is πrl where l is the SLANT lenght. l =( 12^2 + 9^2)^1/2 = (225)^1/2 = 15. Thus the csa will be 3.14 915 = 423.9 cm^2

33.

The height of a cone is 12 cm and the radius of its base is 9 cm find the Csa of cone take π 3.14

Answer»

ANSWER: the csa of cone will be 423.9 cm^2

Step-by-step explanation:

The formula of CURVED SURFACE area is πrl where l is the SLANT lenght.

l =( 12^2 + 9^2)^1/2

= (225)^1/2 = 15.

Thus the csa will be 3.14 *9*15 = 423.9 cm^2

Discussion

34.	Find dy/dx of x^2-2xy+y^2
Answer» ANSWER: dy/dx=2x-2x =0 Step-by-step EXPLANATION:

34.

Find dy/dx of x^2-2xy+y^2

Answer»

ANSWER:

dy/dx=2x-2x

=0

Step-by-step EXPLANATION:

Discussion

35.	Help plzzFind the value of x:-
Answer» ANSWER: x=√{(6×6) +(8×8) } =√(36+64) =√100 10

35.

Help plzzFind the value of x:-

Answer»

ANSWER:

x=√{(6×6) +(8×8) }

=√(36+64)

=√100

10

Discussion

36.	Quadrilateral formed by angle bisectors of cyclic quadrilateral is also cyclic prove.
Answer» Step-by-step explanation: Given: A CYCLIC quadrilateral ABCD in which the angle bisectors AR, BR, CP O and DP of internal angles A, B, C and D RESPECTIVELY form a quadrilateral PQRS. To prove: PQRS is a cyclic quadrilateral. Proof: In △ARB, we have 1/2∠A + 1/2∠B + ∠R = 180° ....(i) (Since, AR, BR are bisectors of ∠A and ∠B) In △DPC, we have 1/2∠D + 1/2∠C + ∠P = 180° ....(ii) (Since, DP,CP are bisectors of ∠D and ∠C respectively) Adding (i) and (ii),we get 1/2∠A + 1/2∠B + ∠R + 1/2∠D + 1/2∠C + ∠P = 180° + 180° ∠P + ∠R = 360° - 1/2(∠A + ∠B + ∠C + ∠D) ∠P + ∠R = 360° - 1/2 x 360° = 360° - 180° ⇒ ∠P + ∠R = 180° As the sum of a PAIR of OPPOSITE angles of quadrilateral PQRS is 180°. Therefore, quadrilateral PQRS is cyclic.

36.

Quadrilateral formed by angle bisectors of cyclic quadrilateral is also cyclic prove.

Answer»

Step-by-step explanation:

Given: A CYCLIC quadrilateral ABCD in which the angle bisectors AR, BR, CP O and DP of internal angles A, B, C and D RESPECTIVELY form a quadrilateral PQRS.

To prove: PQRS is a cyclic quadrilateral.

Proof: In △ARB, we have

1/2∠A + 1/2∠B + ∠R = 180° ....(i) (Since, AR, BR are bisectors of ∠A and ∠B)

In △DPC, we have

1/2∠D + 1/2∠C + ∠P = 180° ....(ii) (Since, DP,CP are bisectors of ∠D and ∠C respectively)

Adding (i) and (ii),we get

1/2∠A + 1/2∠B + ∠R + 1/2∠D + 1/2∠C + ∠P = 180° + 180°

∠P + ∠R = 360° - 1/2(∠A + ∠B + ∠C + ∠D)

∠P + ∠R = 360° - 1/2 x 360° = 360° - 180°

⇒ ∠P + ∠R = 180°

As the sum of a PAIR of OPPOSITE angles of quadrilateral PQRS is 180°. Therefore, quadrilateral PQRS is cyclic.

Discussion

37.	(a) An article has a marked price of62,000. If the sale price (includingGST) is 79,360, find the rate of GSTcharged.[3]
Answer» ANSWER: Step-by-step EXPLANATION:

37.

(a) An article has a marked price of62,000. If the sale price (includingGST) is 79,360, find the rate of GSTcharged.[3]

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

38.	Priyanka subtracts thrice the number of apples she has from 65.SHE finds the result to be 14.How many apples does she have?
Answer» ANSWER: she have 17 APPLES Step-by-step EXPLANATION: LET the number of apples be X Then, 65 - 3X =14 3X = 51 X = 17

38.

Priyanka subtracts thrice the number of apples she has from 65.SHE finds the result to be 14.How many apples does she have?

Answer»

ANSWER: she have 17 APPLES

Step-by-step EXPLANATION:

LET the number of apples be X

Then,

65 - 3X =14

3X = 51

X = 17

Discussion

39.	Draw a triangle PQR where the angles are in Ratio of 1:2:3, draw triangle ABC ~triangle PQR whose sides are 1/3 times the sides of triangle PQR
Answer» Answer: let ONE of the angle of triangle PQR be 'x' then, other ANGLES are '2x' & '3x' now SUM of the angles of triangle = 180 so, x+2x+3x=180 6x=180 x=30 2x=60 3x=90 Draw the triangle PQR with these angles

39.

Draw a triangle PQR where the angles are in Ratio of 1:2:3, draw triangle ABC ~triangle PQR whose sides are 1/3 times the sides of triangle PQR

Answer»

Answer:

let ONE of the angle of triangle PQR be 'x'
then, other ANGLES are '2x' & '3x'
now SUM of the angles of triangle = 180

so, x+2x+3x=180

6x=180

x=30

2x=60

3x=90

Draw the triangle PQR with these angles

Discussion

40.	If m=cosA÷cosB,n=cosA÷sinB prove that m^2 + n^2 × cos^2B =m^2
Answer» Answer: it's easy multiple TIMES and I have a few QUESTIONS about the DAY

40.

If m=cosA÷cosB,n=cosA÷sinB prove that m^2 + n^2 × cos^2B =m^2

Answer»

Answer:

it's easy multiple TIMES and I have a few QUESTIONS about the DAY

Discussion

41.	Please help me!! !! !! !! !! ! que9
Answer» ANSWER: I THINK a) 8 is RIGHT answer

41.

Please help me!! !! !! !! !! ! que9

Answer»

ANSWER:

I THINK a) 8 is RIGHT answer

Discussion

42.	An iron pipe 20 CM long has exterior diameter equal to 14 CM. If the thickness of the pipe is 1 cm,then find whole surface area of pipe.
Answer» Height=20 cm exterior DIAMETER= 14cm Therefore, exterior radius(R)=14/2=7. THICKNESS of Pipe= 1cm. Therefore Inner Radius (r)=R - Thickness 7-1=6 Assuming that top and BOTTOM are open, Whole surface AREA of Pipe= 2πh(R+r) + 2π (R^2-r^2) 2 x 22/7 (7+6) + 2 x 22/7 (7^2-6^2) =44/7 x 13 + 44/7 x 13 =81.71 x2 =163.428

42.

An iron pipe 20 CM long has exterior diameter equal to 14 CM. If the thickness of the pipe is 1 cm,then find whole surface area of pipe.

Answer»

Height=20 cm

exterior DIAMETER= 14cm

Therefore, exterior radius(R)=14/2=7.

THICKNESS of Pipe= 1cm.

Therefore Inner Radius (r)=R - Thickness

7-1=6

Assuming that top and BOTTOM are open, Whole surface AREA of Pipe=

2πh(R+r) + 2π (R^2-r^2)

2 x 22/7 (7+6) + 2 x 22/7 (7^2-6^2)

=44/7 x 13 + 44/7 x 13

=81.71 x2

=163.428

Discussion

43.	Solve this all sum please request
Answer» Step-by-step explanation: step-1 make linear pair to the all exterior angles step -2 LET the unknown angle number be = X step-3 add all interior angles which is equal to 360 DEGREES step-4 we will GET 250+x=360 degrees step -5 do, x=360-250=110degrees step -6 do linear pair to 110degrees to x and you Will get the answer 70 degrees

43.

Solve this all sum please request

Answer»

Step-by-step explanation:

step-1 make linear pair to the all exterior angles

step -2 LET the unknown angle number be = X

step-3 add all interior angles which is equal to 360 DEGREES

step-4 we will GET 250+x=360 degrees

step -5 do, x=360-250=110degrees

step -6 do linear pair to 110degrees to x and you Will get the answer 70 degrees

Discussion

44.	sin 65 by cos 25 degree + cos 32 by sin 58 degree minus sin 28 degree into sec 32 + cosec square 30 degree
Answer» Answer: 60° Step-by-step EXPLANATION:

44.

sin 65 by cos 25 degree + cos 32 by sin 58 degree minus sin 28 degree into sec 32 + cosec square 30 degree

Answer»

Answer:

60°

Step-by-step EXPLANATION:

Discussion

45.	Find rif value of pie is 22/7where r is a radius
Answer» Answer: R = 7 TELL me this answer is wright or wrong............

45.

Find rif value of pie is 22/7where r is a radius

Answer»

Answer:

R = 7 TELL me this answer is wright or wrong............

Discussion

46.	The median of triangle ABC intersect at G show that area of triangle BGC is half or triangle ABC
Answer» Step-by-step EXPLANATION: CONSIDER the a above figure given, BG is the MEDIAN of ∆ABC we draw BM।।CA so, $ca = 2cg$ here, BM is the height of ∆ABC and ∆BCG now, $area \: of \: abc = \frac{1}{2} \times ca \times bm \\ area \: of \: bcg = \frac{1}{2} \times cg \times bm$ now, comparing their areas, $\frac{abc}{bcg} = \frac{ \frac{1}{2} \times ca \times bm }{ \frac{1}{2} \times cg \times bm} = \frac{ca}{cg} = \frac{2cg}{cg } =2 \\ > \frac{abc}{bcg} = 2 \\ > abc = 2bcg$ hence, proved

46.

The median of triangle ABC intersect at G show that area of triangle BGC is half or triangle ABC

Answer»

Step-by-step EXPLANATION:

CONSIDER the a above figure

given, BG is the MEDIAN of ∆ABC

we draw BM।।CA

so,

$ca = 2cg$

here, BM is the height of ∆ABC and ∆BCG

now,

$area \: of \: abc = \frac{1}{2} \times ca \times bm \\ area \: of \: bcg = \frac{1}{2} \times cg \times bm$

now, comparing their areas,

$\frac{abc}{bcg} = \frac{ \frac{1}{2} \times ca \times bm }{ \frac{1}{2} \times cg \times bm} = \frac{ca}{cg} = \frac{2cg}{cg } =2 \\ > \frac{abc}{bcg} = 2 \\ > abc = 2bcg$

hence, proved

Discussion

47.	In the given figure, two circles intersect each other atpoints S and R. Their common tangent PQ touches thecircle at points P, Q.Prove that, anglePRQ + anglePSQ= 180º.
Answer» ANSWER: ATTACHED above HOPE you SATISFIED with my answer.

47.

In the given figure, two circles intersect each other atpoints S and R. Their common tangent PQ touches thecircle at points P, Q.Prove that, anglePRQ + anglePSQ= 180º.

Answer»

ANSWER:

ATTACHED above HOPE you SATISFIED with my answer.

Discussion

48.	in a circle of radius 4.5 CM draw two radii such that angle between them is 60 degree draw two tangents at the ends of the radii
Answer» Step-by-step EXPLANATION: here, R is EQUALS to 4.5

48.

in a circle of radius 4.5 CM draw two radii such that angle between them is 60 degree draw two tangents at the ends of the radii

Answer»

Step-by-step EXPLANATION:

here, R is EQUALS to 4.5

Discussion

49.	Find the slope of line RS, if R(3,k) and S(k,-5). Find the value of K also.
Answer» ANSWER: are you SURE the QUESTION is COMPLETE?

49.

Find the slope of line RS, if R(3,k) and S(k,-5). Find the value of K also.

Answer»

ANSWER:

are you SURE the QUESTION is COMPLETE?

Discussion

50.	if the radius and height of a cone and a cylinder are absolutely equal then find in which solid more water can hold
Answer» ANSWER: CYLINDER by 3 times Step-by-step EXPLANATION:

50.

if the radius and height of a cone and a cylinder are absolutely equal then find in which solid more water can hold

Answer»

ANSWER:

CYLINDER by 3 times

Step-by-step EXPLANATION:

Discussion

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