Answer:
18 feet
Step-by-step explanation:
{10 + w = I
{2w + 2l = 92
2w + 2[10 + w] = 92
2w + 20 + 2w = 92
|___________|
92 = 20 + 4w
-20 -20
_____________
72 = 4w
__ ___
4 4
18 = w [Plug this back into both equations above to get the length of 28 feet]; 28 = l
* Since we are only told to find the width, you do not have to if you do not want to.
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