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 = S3
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 = r2 x T)
Complete this volume activity sheet (Word 438 kb)