SOLUTION: Farmer Ed has 900900 meters of​ fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fence the side along the​ river, find t

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Question 1024229: Farmer Ed has 900900 meters of​ fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fence the side along the​ river, find the length and width of the plot that will maximize the area. What is the largest area that can be​ enclosed?
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let = width of rectangular plot in meters
( perpendicular to river )
= length in meters ( parallel to river )
Let = area


This is a parabola with a maximum because of
the minus sign with term
Use the formula:

when the from of the equation is:




----------------



and


-------------------------
the length and width of the plot
that will maximize the area are:
width = 225225 m
length = 450450 m
------------------
The maximum area is:


( ran out of places on my calculator )
---------------
Here's the plot:

( calibrated in 1/1000's )

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