I think the wording of the question throws me, I wondering if someone can have a look at what I have come up with and tell me if I am on the right track.
For (a) all I can think of is X < L
For (b) I get
A = X * (100 - X) / 2
Graphing this I get a parabola which I would expect.
For (d) even without looking at the graph I know the width can't exceed the length
so I assume x = 49.9 at its largest area as when x is 50 the length is then 50 and its
Knowing that then the dimensions for the largest possible area would be 49.9 X 50.1
I apologize if all that is astronomically incorrect but any input would be greatly appreciated.