Question

The volume of a cone is $100\pi c{m}^3$. Its base radius is $5cm$, find its height.

Answer 1

Volume of the cone $=\frac{1}{3}\pi r^{2}h$

$100\pi$ $=\frac{1}{3}\pi \times 5\times 5\times h$

$300$ $=5\times 5\times h$

It gives:

$h=12cm$