The dimensions of a block are 4m x 3m x 2m and the relative density is 2.7. what is its mass?

The density is defined as the quotient of the mass by the volume, lets calculate the volume, we have density, we can solve for the mass.

volume = 4*3*2 = 24 m^2

density = mass/volume

mass = density*volume

mass = 2.7*24

mass = 64.8

we don't know the units because we do not know the density units