Question

A brand of uncooked spaghetti comes in a box that is a rectangular prism with a length of 9 inches, a width of 3 inches, and a height of 3 1/2

inches. What is the surface area?

Answer 1

`Area = 138in^2`

Explanation:

Given

`L = 9; W =3; H =3(1)/(2)`

Required

The surface area

This is calculated as:

`Area = 2(LW + LH + WH)`

So:

`Area = 2(9*3 + 9*3(1)/(2) + 3*3(1)/(2))`

`Area = 2(27 + 31(1)/(2) + 10(1)/(2))`

`Area = 2*69`

`Area = 138in^2`