Question

Find the height of the figure below if the volume is 135.33 cm^3.

Answer 1

http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/b/assessments/SA-SurfaceAreaandVolumeUnitExam/Geometry_9_Exam_FINAL_LT_060909_47q.jpg

Answer 2

@ganeshie8

Answer 3

@Hero

Answer 4

volume of a cylinder, V= pi*r^2*h where r is the radius and h = height
it looks like the diameter is 7 therefore the radius is 7/2
pi =22/7
you are given V = 135.33
the question ask to find h
plug the numbers and solve for h

Answer 5

So.. 135.33=π*4.7^2*h
135.33=69.4*h
dividing both sides by 68.4, I got the result: h=1.95. Right?

Answer 6

i didn't do the calculation
was the diameter 7?

Answer 7

Yes.

Answer 8

NO WAIt it was 4.7

Answer 9

H = V/pi*r^2
= 135.33 /( 3.142* 7/2*7/2)

Answer 10

the formula is correct plug the numbers

Answer 11

so what is the radius?

Answer 12

The radius would be 2.35.

Answer 13

Because I divided 4.7, the diameter, by two.

Answer 14

now sq that

Answer 15

then multiply by pi

Answer 16

22.06*π=69.3

Answer 17

17.35

Answer 18

?

Answer 19

h =135.33/17.35=7.8

Answer 20

Wait how'd you get that?

Answer 21

v=pi* r^2 * h

Answer 22

how would you find h?

Answer 23

By division?

Answer 24

ok that's a start
of what by what
rearrange to make h the subject

Answer 25

Ummm. I'm not sure. Sorry.

Answer 26

if 2x = 6 how would you find x?

Answer 27

You divide 2 on each side!

Answer 28

good. use the same principle to find h given that v= pi*r^2*h

Answer 29

Okay. Got it. I got 7.8. c:

Answer 30

great

Answer 31

Would you mind helping me with one more? You are a huge help!

Answer 32

ok