How do you understand the expression for the density of copper is 8900 kg / m?

The density of a substance ρ is called the ratio of the mass of a substance m to the volume V that this substance occupies: ρ = m / V.
The physical meaning of density: density is the mass of a substance taken in a volume of 1 m ^ 3.
The density of copper ρ = 8900 kg / m ^ 3 means that the volume of copper V = 1 m ^ 3 will have a mass of m = 8900 kg.

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