SOLUTION: A farmer wants to enclose a rectangular field along a river on three sides. If 1,200 feet of fencing is to be used, what dimensions will maximize the enclosed area?

Question 795793: A farmer wants to enclose a rectangular field along a river on three sides. If 1,200 feet of fencing is to be used, what dimensions will maximize the enclosed area?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A farmer wants to enclose a rectangular field along a river on three sides. If 1,200 feet of fencing is to be used, what dimensions will maximize the enclosed area?
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The length = 2x the width
--> 300 by 600
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Area = L*W = W*(1200 - 2W)
= -2W^2 + 1200W
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Find the Axis of Symmetry of the parabola, it's W = 300

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