A gardener has 640 feet of fencing to fence in a rectangular garden. One side of the garden is bordered by a river and so it does not need any fencing.

What dimensions would guarantee that the garden has the greatest possible area?  

shorter side:     ft (feet)

longer side:   ft  (feet)

greatest possible area:    ft²  (square-feet)

Box 1: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity

Box 2: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity

Box 3: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity