The surface area of an entire cube is 96 square cm If the length and width of each side are equal what the length of one side of the cube?

The surface area of a cube is given by ##S.A = 6s^2## where ##s## is the side length.
##96= 6s^2##
##16 = s^2##
##s = 4##
Therefore one side measures ##4## cm.
Hopefully this helps!