There are two missing side lengths that are needed in order to calculate the perimeter.
The value of one of the missing side lengths is:
[tex]31-18=13[/tex]
The value of the second one is:
[tex]22-9=13[/tex]
Now that we have all the side lengths, we add them together to find the perimeter.
[tex]22+31+9+18+13+13=106[/tex]
The perimeter of the basement floor is 106 ft. Let me know if you need any clarifications, thanks!
~ Padoru
