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A farmer wants to fence a rectangular area by using the wall of a barn as one side of the rectangle and then enclosing the other three sides with 160 feet of fence. find the dimensions of the rectangle
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A farmer wants to fence a rectangular area by using the wall of a barn as one side of the rectangle and then enclosing the other three sides with 160 feet of fence. find the dimensions of the rectangle that give the maximum area inside.

User Daniel Albuschat
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P=2W+2L Since one side is formed from the side of the barn, this means that we can take out one length (or width, it doesn't matter)
User Xtempore
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