A rectangular area is enclosed by a fence and divided by another section of fence parallel to two of its sides. If the 600m of fence used encloses a maximum area, what are the dimensions of the enclosure?
My work:
2L + 3W = 600
2L = 600 - 3W
L = 300 - 1.5W
A = LW
A = (300 - 1.5W)W
A = w(300 - 1.5W)
Zeros: X=0, X= 200
200/2 = 100
Width: 100
Length: 200
Correct ?