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posted by Alex Saturday, January 19, 2013 at 12:48am.

A rectangular field will be fenced on all four sides. Fencing for the north and south sides costs $5 per foot and fencing for the other two sides costs $9 per foot. What is the maximum area that can be enclosed for $6000?

6000=2(5x)+2(9x) 6000=10x+18x 6000=28x 214.3=x 214.3*214.3 = 45924.5 sq ft A square gives the maximum area. So therefore the sides are equal(x).

Kerbie: HOW THE SIDES ARE EQUAL SINCE IT IS A RECTANGULAR GARDEN?

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