Hey! I'm having trouble with a certain question.

A rectangular field is to be enclosed by 600 m of fence.

a) What dimensions will give a maximum area?

b) What is the maximum area?

This is what I have so far:

x= 2 sides of rectangular field

y= 2 other sides of rectangular field

I know that:

2x+2y=600

and for the area I need to do (x)(y) = area.

Now what???

Thank you : )