Take air to have a mass density approximately one one thousandth that of water, or $$rho air $=$$1\mathrm{.}0$ kg$/$m$3$

Consider a cube shaped volume of air with this density. What is the length of one side of the cube such that the total mass of air contained in the cube is one metric ton$\mathrm{ (}1000$ kilograms$)?$

A$.5$ meters

B$.10$ meters

C$.20$ meters

D$.40$ meters