Maxine has 40 meters of fencing to build a rectangular pen for her dog. what is the maximum area for the pen? what are the dimensions of the pen?

A rectangle can be a square, but a square cannot be a rectangle.
If I treat this as a square (4 equal sides), I can get the area a lot easier. so 40 meters of fencing/ 4 sides = 10 meters/side 

Using Area formula, maximum area = 100 M^2

The answer is a. yes, it asks a question that can be answered correctly (by measuring hands).