Determine the area that two circles ovelap each other
area = CircleOverlap(CircleA; CircleB);
CircleOverlap returns the amount of area that is shared by two circles.
|CircleA||a vector (x, y, radius) that identifyes a circle|
|CircleB||a vector (x, y, radius) that identifyes a circle|
a=(5, 5, 2) 5 5 2 b=7, 7, 2 7 7 2 CircleOverlap(a;b) 2.283185 CircleOverlap(a;a) 12.566371 4*pi() 12.566371