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The area of a rectangular wall of a barn is 64 square feet and it's length is 8 feet longer than twice it's width so what is the length of the wall of the barn?
Wiki User
∙ 8y ago
w = width
l = length
A =area = wl = 64
l = 2w + 8
wl = w(2w+8) = 64
2w^2 +8w -64 = 0
w^2 + 4w -32 = 0
(w+8)(w-4) = 0
w = 4
wl =4 l = 64
l = 16
length = 16 feet
Wiki User
∙ 8y ago
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