Question

The surface area of a rectangular box is given by the polynomial 2HL +2LW +​2HW and is measured in square units. A rectangular box is to be constructed for shipping materials. The box is to have dimensions of 13 inches by 4 inches by 5 inches. Find the surface area of the box.

Answer 1

The surface area of the box is
`SA=274\ in^2`

Explanation:

we know that

The surface area of a box is equal to

`SA=2HL +2LW +2HW`

In this problem

Let

`L=13\ in`

`W=4\ in`

`H=5\ in`

substitute the given values in the formula

`SA=2(5)(13) +2(13)(4) +2(5)(4)`

`SA=130 +104 +40`

`SA=274\ in^2`