Answer:
12 feet
Explanation:
w = width
w+2 = length
w(w+2) = 8
w² + 2w - 8 = 0
(w+4)(w-2) = 0
w = -4 exclude because a length cannot be negative
w = 2
length = 2+2 or 4
P = 2(2)+2(4)
P = 4+8 or 12
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