Answer:
6 units
Step-by-step explanation:
The total area that the surface of a 3-dimensional object would cover if its sides were laid flat is called it's surface area. Surface area is measured in square units. The surface area of a unit cube is 6 square units.
29 small boxes
XX, XY ,XX, XY ,XY, XX
87.5 pages
35 X 2.5 = 87.5