SOLUTION: a rancher wants to use 400 feet of fencing to enclose a rectangular area of 6400 square feet. what dimensions should the rectangle have?

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Question 433421: a rancher wants to use 400 feet of fencing to enclose a rectangular area of 6400 square feet. what dimensions should the rectangle have?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
400 = 2*(L + W)
L + W = 200
L*W = 6400
--> 160 by 40