Susan has 50ft of fencing to use to build a garden in her backyard.

A: The shape must be a rectangle/square.

B: Sketch at least five different examples that Susan could use for her backyard and state what the perimeter of each one is.

C: The most important part, what is the largest area garden that Susan can create, show the garden's dimension and explain how you know it's the largest area.

i need a formula

http://www.jiskha.com/display.cgi?id=1294595498