Question

a farmer wishes to enclose a recectangular garden with 300 yard fencing, river runs along one side of the garden no fencing is need there, what are the dimensins of th rectangle if the area is 10450 square yards

a=l*w
10,450=300*W

Answer 1

where did you get 300W?

If there are two short sides (x) and one long side (y), then

2x+y = 300
a = xy = x(300-2x) = 10450
Now solve that for x, the short side.