The Compendium Geometry is an eBook providing facts, formulas and explanations about geometry.

Cube (Hexahedron)

The cube (or hexahedron) is one of the five Platonic solids. It is composed of 6 squares linked together at right angles.

For a cube with edge length a the volume V = a3, its surface S = 6a2.

The radii of the circumscribed (rc) and inscribed (ri) spheres are

rc = a/2    and     ri = a/2.

Last Update: 2010-12-06