The density of an object is defined as the ratio of its mass over its volume; it shows how much mass is packed in a specific volume unit. Mathematically, p=m/V where p=density.
Substituting, we get that:[tex]p= \frac{42kg}{22m^3}=1.91 \frac{kg}{m^3} [/tex].
We have that the arithmetic value is 1.91 and the units are kg/m^3.