Question

amy has a gift for her mother that she needs to wrap. she designs a gift box in the shape of a rectangular prism. the dimensions of the prism are 6 inches by 6 inches by 7.5 inches what is the surface are of the gift box

Answer 1

SA = 2 (lw + wh + lh) = 2 ( 6 ×6 + 6 × 7 + 6 × 7) = 2(120) = 240 in^2

Conceptually you can visualize the rectangular prism. It's going to have two square faces (6 by 6) and four rectangular faces (7 by 6). Add those together and it gives you 240.