Without taking the pizza out of the box or moving any part of it, what's the minimum number of straight cuts required to cut it into 7 pieces of equal area? A straight cut may start and end anywhere, and the pizza comes uncut and round in the box.

A cube has all its faces painted with different colours. It is cut into smaller cubes of equal sizes such that the side of the small cube is one-fourth the big cube. The number of small cubes with only one of the sides painted is-