There is a wall in your backyard. It is so long that you can’t see its endpoints. You want to build a fence of length L such that the area enclosed between the wall and the fence is maximized. The fence can be of arbitrary shape, but only its two endpoints may touch the wall.
given : the length of the fence.
the wanted solution : the largest area. Your answer should be rounded to 2 digits after the decimal point.
1 -> 0.16
hints : take pi as 3.14159265358.
i want help to find the formula to answer this