Find the length of one edge of the cube: (a)
Use the volume formula: (V = a^3)
If given surface area (S), compute edge length (a = sqrt[2]{S}), then (V = a^3)
If given space diagonal (d), compute edge length (a = frac{d}{sqrt{3}}), then (V = a^3)
If given face diagonal (p), compute edge length (a = frac{p}{sqrt{2}}), then (V = a^3)