Answer:
864 square inches
Step-by-step explanation:
To solve this problem, first we need to know the area of each side of the cube(since the shrink wrap will cover these sides) :
The area of each side is A= where L is the length of the side. In this case, L= 4 inches.
Thus, the area of each side is square inches.
However, the cube has 6 sides so we have to multiply the area of each side by 6, this gives us square inches. Thus, we need 96 square inches of shrink wrap for each cube.
Now, we have nine cubes, so we have to multiply those 96 square inches by 9, .
Thus, we need 864 square inches of shrink wrap to wrap 9 cubes.