• for a rectangular parallelepiped, the value is the product of the three side lengths,
• for a disjoint union of domains, the value is the sum of the values associated to these domains,
• for more complicated domains, the value can be approximated by sums and given by an integral

Note 1 to entry: The volume V of the three-dimensional domain D is determined by the volume integral ${\displaystyle \underset{\text{D}}{\iiint }\mathrm{d}V}$, where dV is the volume element (IEV 102-05-10).

Note 2 to entry: In the usual geometrical space, the volume is a quantity of dimension length cubed.