Question

You want to wrap a gift shaped like the regular triangular prism shown. How many square inches of wrapping paper do you need to completely cover the​ prism?

length 11 in
height 8.7 in
width 10 in

Answer 1

You would need 438.45 inches of wrapping paper to cover the triangular prism completely. But since you can’t really cut the paper to that exact decimal you would round to 439 inches. Don’t forget to cube your answer since it’s area. Final answer should look like 429in.2