# What is the density of a block of marble that occupies 310 cm^3 and has a mass of 853 g?

Density $=$ $\rho$ $=$ $\frac{853 \cdot g}{310 \cdot c {m}^{3}}$ $=$ ??
Whatever the numerical answer is (2.5 approx.), the units are $g \cdot c {m}^{- 3}$, mass per unit volume as required.