Question

A brand of uncooked spaghetti comes in a box that is a rectangular prism with a length of 9 inches, a width of 2 inches, and a height of 1½ inches. What is the surface area of the box?

Answer 1

69

Explanation:

2(9*2 + 9*3/2 + 2*3/2) = 2(18 + 27/2 + 3)

= 2(21 + 27/2)

=42 + 27

=69