Question

Find the exact volume of a waffle ice cream cone with a 9​-in. diameter and a height of 15 inches.

Answer 1

The volume of a cone is:

$V_{cone}=\dfrac{1}{3}\pi r^2h,$ where r is base's radius, h is cone's height.

If diameter is 9 in, then radius is 4.5 in and

$V_{cone}=\dfrac{1}{3}\pi (4.5)^2\cdot 15=101.25\pi.$

Answer: $V_{cone}=101.25\pi.$