The volume of a box is equal to the product its width, length and height V = whl Since all of the sides are 4 inches, we end up with V= 4*4*4 Simplify to V = 16*4 = 64. If the volume of one box is 64: V = 64 The volume of 12 boxes is 64 * 12. 12V = 768 Since the volume of 12 boxes is the same as the volume of the carton, the volume of the carton must be 768 cubic inches.
