Question

The radius of a cylinder is 15 cm. The volume of the cylinder, found using 3.14 to approximate pi, is 19,782 cm^3.
What is the height of the cylinder?
Express your answer as a whole number.

Answer 1

equation for volume of a cylinder
\[V=\pi(r^{2})h\]
rearrange to get h
\[\frac{ V }{ \pi(r^{2}) }=h\]

Answer 2

V is the volume, r is the radius
you know these values, substitute them into the equation and work out h the height