What is the density of the substance of a plate with a volume of 0.0012 m / 3 if its mass is 2.76 kg?

These tasks: V (volume of the considered slab) = 0.0012 m3; m (slab weight) = 2.76 kg.

The density of the substance from which the considered plate is made is determined by the formula: ρ = m / V.

Let’s make a calculation: ρ = 2.76 / 0.0012 = 2300 kg / m3 (corresponds to the density of concrete).

Answer: The slab is made of a substance with a density of 2300 kg / m3.