If D is the density of a body of mass M and volume V, then

If D is density of a body of mass M and volume V, then D = M/V

The density, ρ, of a substance is the quotient of the mass, m, and its volume, v.

A flow parameter, V/p is calculated based on the fluid velocity and the density.

The density of a substance is defined as a ratio between the mass (m) and volume (V) at a specified temperature.