The volume of a cube is given by:
[tex] V=L^3 [/tex]
where L is the measure of each side (which corresponds to its width, since all sides of a cube are equal).
Plugging the data of the problem, L=32.1 cm, inside the equation, we find the volume:
[tex] V=L^3 =(32.1 cm)^3 =33076.2 cm^3 [/tex]