What's a Truncated Cone?

: a cone section or pyramid lacking an apex and terminating in a plane usually parallel to the base.

Which one is a truncated cone?

truncated cone - a frustum formed from a cone. frustum - a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed.

What is the formula for a truncated cone?

Truncated cone volume (volume of frustum)

volume = (1/3) * π * depth * (r² + r * R + R²) , where R is a radius of the base of a cone, and r of top surface radius.