Circular Area
Description:
Your task is to write a program, which, given two circles, calculates the area of their intersection with the accuracy of three digits after decimal point.
Input:
In the single line of input file there are space-separated real numbers x1 y1 r1 x2 y2 r2. They represent center coordinates and radii of two circles.
Output:
The output file must contain single real number - the area.
Sample Input:
20.0 30.0 15.0 40.0 30.0 30.0
Sample Output:
608.366
Submit