Problema Solution
A file folder box is in the shape of a rectangular prism with a length of 12 inches, a width of 9 inches and a height of 10 inches. It is open at the top. Find the surface area of the file folder box?
Answer provided by our tutors
The area of the rectangular prism without the top is:
A = 12*9 + 2*(12*10 + 9*10)
A = 528 in^2
The surface area of the file folder box is 528 square inches.