SOLUTION: A rectangular has a perimeter of 120 ft. Find the width if area is area is to be maximum.?

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Question 875777: A rectangular has a perimeter of 120 ft. Find the width if area is area is to be maximum.?
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!


For a rectangle,

From above,

Substituting,


TO find the maximum, take the derivative and set it to zero.





The maximum area occurs when the rectangle is a square.

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