If you get to pick a shape of a 20 mile perimiter what shape would be most efficient and why

Question

The shape's efficiency is determined by what you define efficency as: If you were trying to enclose the maximum area, a circle. If you were trying to plow with a tractor, a long rectangle. If you were irrigating with a sprinkler, a circle.
So decide what you mean by efficiency.

If you were using the perimeter material to enclose the maximum area, a circle would be your choice.

If you were trying to enclose the maximum rectangular area, a square would be your choice.

Answer 1

i would pick a square because it is a simple shape