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Density Formula

ρ = m / V

What it means

Density is mass per unit volume. Use it to identify materials, work out whether something floats, or convert between mass and volume.

Variables

SymbolQuantitySI unit
ρdensitykg/m³
mmasskg
Vvolume

Worked example

Given m = 20 kg, V = 4 m³, solve for ρ:

ρ = 5 kg/m³

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