Density is a value for
mass, such as kg, divided by a value for volume, such as m3. Density is a
physical property of a substance that represents the mass of that substance per
unit volume. Therefore, we calculate as follows:
density = mass / volume
density = 1 / πr²h
density = 1 / π((39/2)^2)(39)
density = 1 / 46589.03
density = 2.15 x 10^-5 kg/mm^3
