Sherry S. answered • 11/12/18

Because no one should have to say, "I was never any good at math."

In order to maximize the area of any polygon, the side lengths need to be the same. Why?

A rectangle 15 km by 3 km has a perimeter of 36 but an area of 45 km^2

However a rectangle that is 10 km by 8 km has a perimeter of 36 but an area of 80 km^2.

So find the rectangle with four equal sides. (We commonly refer to it as a square!) Then use the lengths for a square with a perimeter of 36.