Question

What is the volume of a cylinder with a height of 7 cm and a radius of 9 cm? plz help

Answer 1

Here is the formula for the volume of a cylinder. :)

Answer 2

Plug in the height and radius and solve...
V = pi*9^2*7
Can you solve that? :D

Answer 3

no i suck at math can you explain how i would solve that plz

Answer 4

No problem. ^.^
First find what 9 squared is. What's 9*9?

Answer 5

81

Answer 6

Right! So now we have:
V = pi*81*7
Let's multiply 81 by pi (3.14) now.
What's 81* 3.14? :)

Answer 7

how did you get 3.14 ??

Answer 8

3.14 is pi. That's what the sign \[\pi \] in the formula means. :)

Answer 9

oh that makes sense so now i need to multiply 81*3.14 ??

Answer 10

Yup! :3

Answer 11

ok i get 254.34 right or wrong??

Answer 12

That's right. :D Now the last step is to multiply that by the height, 7.
254.34 * 7 = ?

Answer 13

1780.38 ??

Answer 14

That's correct. :) Now you have the volume. :D Great job! ^.^