Solve for the surface area of the rectangular prism?
3 in
5 in
12 in
Surface Area = 2lw + 2lh + 2wh
Surface Area = 2(3)(5) + 2(3)(12) + 2(5)(12)
Surface Area = 30 + 72 + 120
Surface Area = 222 square inches
The surface area of the rectangular prism is 222 square inches.