#
How do you calculate the volume of an object?

When a two dimensional figure is given thickness a three dimensional figure
is created. Three dimensional figures are called solids.

The **volume ** of a solid is the amount of material the
solid contains. Units are written as mm 3 (cubic millimetres), m 3 (cubic
metres), in 3 (cubic inches), or ft 3 (cubic feet).

The formula for the volume of a cube is V = S^{3}

The formula for the volume of a rectangular solid is V = l x b x d

The formula for the volume of a triangular prism is

The formula for calculating the volume of a disk is

(In engineering we tend to work with diameter (D), but sometimes you may
have to use the radius (r) of a circle in which case the formula for volume
of a disk is A = r^{2} x
T)

### How do you calculate the volume of a solid?

### Need more practice?

Complete
this volume activity sheet (Word 438 kb)