This is the concept of density, volume and mass of different materials; To calculate for the volume of an aluminium material with density of 2.375 grams per cubic centimeter and a mass of 0.78 Kilogram we proceed as follows;
Density=mass/volume making volume the subject we get; volume=mass/density thus; mass=0.78 kg= 780 g density=2.375 g/cm^3 Hence, volume=780/2.375=328.421 cm^3