Given:
Perimeter = 40 feet,
The measure of the four sides is 11 feet, g, 11 feet, and g.
We know that the perimeter = the sum of the four sides.
[tex]\text{perimeter =11+g+11+g}[/tex]
Replace perimeter =40, we get
[tex]\text{40=11+g+11+g}[/tex]
Adding 11 and 11, we get
[tex]\text{40=11+11+g+g}[/tex]
[tex]\text{40=22+g+g}[/tex]
