Suppose you have 54 feet of fencing to enclose a rectangular dog pen. the function a = 27x - x2, where x = width, gives you the area of the dog pen in square feet. what width gives you the maximum area? what is the maximum area? round to the nearest tenth as necessary.

Question

Kristin Massey

Today, 13:14

+1

Answers (1)

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Blake Welch · Answer 1

Take first derivative of area function and set it to zero

da/dx=27-2x=0

So x=27/2 = 13.5

a=182.25