The definition of density is the mass per volume of the
substance. This is an intrinsic property therefore the size (or any external
feature) does not change this property.
For aluminum, it is given that it has a density of 2.70 x
10^3 kg/m^3.
The problem states that there is an aluminum substance
having a volume of 1.50 m^3
Mass of aluminum = (1.50 m^3)( 2.70 x 10^3 kg/m^3) = 4050 kg
