Answer to Question #24433 in Geometry for PATTY

Question

mary wants to wrap a present. the present is in the shape of a box with length of 6 inches, height of 3 inches and width of 9 inches. she only has 190 square inche of wrapping paper. does she have enough paper?

Answer 1

Here we must calculate the area of box surface. The box has 6 faces, each face is rectangular. Let’s calculate the area of each and sum:
3*6+3*6+3*9+3*9+6*9+6*9=198
&
As we can see, we need at least 198 square inches of wrapping paper to wrap, but we have only 190. That’s why Mary doesn’t have enough paper.
Answer: Mary doesn’t have enough paper