A cone has a diameter of 18 units and height of 8 units. What is its volume?

The radius of your cone is half of 18 units = 9 units.

The volume of any cone is V = (1/3) · (pi) · (radius) ² · (height)

- - Take that formula for the volume of any cone.

- - Write '8' in place of 'height'.

- - Write '9' in place of 'radius'.

- - Write '3.142' in place of 'pi'.

- - Complete the arithmetic.

- - Bada-bing, you've got the volume.

The volume of the cone is 536.17.