Front

Volume

Back

The amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.

Front

Cylinder

Back

A solid geometric figure with straight parallel sides and a circular or oval cross section.

Front

Cone

Back

A solid or hollow object which tapers from a circular or roughly circular base to a point.

Front

Sphere

Back

A perfectly round geometrical object in three-dimensional space, such as the shape of a round ball.

Front

Radius

Back

A straight line from the center to the circumference of a circle or sphere.

Front

Diameter

Back

A straight line passing from side to side through the center of a body or figure, especially a circle or sphere.

Front

Area

Back

The extent or measurement of a surface or piece of land.

Front

Base

Back

The bottom or supporting part of a geometric figure.

Front

Pi

Back

The ratio of the circumference of a circle to its diameter, approximately equal to 3.14159.