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=[tex]L^{2}[/tex] where L is the length of the side. In this case, L= 4 inches.
Thus, the area of each side is [tex]A=L^{2}=4^{2} =16[/tex] square inches.
However, the cube has 6 sides so we have to multiply the area of each side by 6, this gives us [tex](16)(6)= 96[/tex] 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, [tex](96)(9)= 864[/tex].
Thus, we need 864 square inches of shrink wrap to wrap 9 cubes.
