Hello there. To solve this question, we have to remember some properties about geometry.
First, given a rectangle with side length L and width W:
Parallel sides have the same length, hence its perimeter, given by the sum of the measures of all its sides, is equal to
[tex]s=2L+2W[/tex]
In this case, we were given the side length and width of the rectangle:
[tex]L=40\text{ in and }W=18\text{ in}[/tex]
Plugging the values, we get
[tex]s=2\cdot40+2\cdot18=80+36=116\text{ in}[/tex]
This is the answer to this question.
