5.74 g of a substance occupies 1.2  cm3.  Keeping the significant figure in view, its density is given by

There are 3 significant figures in the measured mass whereas there are only 2 significant figures in the measured volume. Hence, the density should be expressed to only 2significant figures. ∵        Density=MassVolume∴        Density=5.741.2g  cm−3=4.8  g  cm−3