p = Density

m = mass

V = volume

**Density** is a measure of how tightly matter is packed together. It is defined as the mass per unit volume. The symbol for density is ρ (rho), and the SI unit of density is kilograms per cubic meter (kg/m³).

The density of a substance can be calculated by dividing its mass by its volume.

The mass of an object is, for example, 4 kg and its volume is 2 m3.

So

4/2=2

The density of the object is therefore 2 kg per m3.

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