Mathematics
marcy1112
17

The area of a rectangular wall of a barn is 160 square feet. It's length is 4 feet longer than twice it's width. Find the length and width of the wall of the barn

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(1) Answers
derelu

Formula: L = 2W + 4 Width: W(2W + 4) = 160 2W^2+4W = 160 2W^2 + 4W - 160 = 0 2(W^2 + 2W - 80) = 0 2(W + 8)(W - 10) = 0  Width: W - 10 = 0 W = 10 Width is 10 ft. Length: L = 2(8) + 4 L = 16 + 4 L = 20 Length is 20 ft.

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