Frustum: meaning, definitions and examples

geometry shape

A frustum is the portion of a solid (normally a cone or a pyramid) that lies between two parallel planes cutting it. It can be described as a shape that has a smaller base and a larger base, joined by a curved or flat surface. The frustum is commonly used in geometry, architecture, and engineering. The volume and surface area of a frustum can be calculated using specific formulas.

truncated cone, truncated pyramid.

Examples of usage

• The frustum of a cone is often used in engineering designs.

• To calculate the volume of a frustum, you need both the radii of the bases.

• The frustum shape was utilized in the design of the new skyscraper.

• The cake was shaped like a frustum, wider at the bottom and narrower at the top.