Question

A cylinder has a height of 8 feet and a volume of 628 ft.³ Find the radius of the cylinder. Use 3.14 for Pi. Show your work.

Answer 1

To find the Volume of a cylinder use
$V=3.14 r^{2} h$
$628=3.14 r^{2} (8)$
multiply 3.14 by 8
$628=25.12 r^{2}$
Divide by 25.12 on both sides
$25= r^{2}$
Find square root of both sides
$\sqrt{25} = \sqrt{ r^{2} }$
$5 = r$

Answer 2

Hi there!

Volume = pi * r^2 * h
628 = 3/14*r^2*8

Now, we simplify:
628=25.12 * r^2
25 = r^2

r = 5

Hope this helps!