Math
posted by Johon .
What is the total surface area of the inside and outside of a container in the shape of a rectangular prism with length of 5 meters, width of 3 meters, and height of 2.2 meters?

"rectangular prism" , fancy word for plain ol' box
Outside surface area
= 2(5x3) + 2(5x2.2) + 2(3x2.2)
= 68.2
Unless we know the thickness of the material used, we might just want to assume that the inside surface area is the same ??