How to Calculate the Volume of a Truncated Cone: Step-by-Step Guide

How to Calculate the Volume of a Truncated Cone: Step-by-Step Guide

A truncated cone is a cone with its top cut off parallel to the base. Its volume is the full cone minus the small cone removed, which simplifies to a formula using both radii and the height between them.

  • (( R ) =) radius of the larger base
  • (( r ) =) radius of the smaller base (the section that was removed)
  • (( h ) =) height of the frustum (not the original cone’s height)

Worked examples: volume of a truncated cone

Practice questions on truncated cone volume

  1. What is the volume of a frustum with ( R = 10 text{ cm}), ( r = 6 text{ cm}), and ( h = 12 text{ cm})?
  2. A truncated cone has ( R = 15 text{ cm}), ( r = 5 text{ cm}), and ( h = 20 text{ cm}). What is its volume?
  1. ( approx 2461.76 text{ cm}^3 )
  2. ( approx 6803.3 text{ cm}^3 )
Original price was: $109.99.Current price is: $54.99.
Original price was: $109.99.Current price is: $54.99.

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