//Some useful equations
int main(){
  //area portion of a circle
  A = pi*r^2 * (theta/(2*pi))
  //area chord of a circle
  A = R * R * acos((R - h)/R) - (R - h) * sqrt(2 * R * h - h * h)
    // h is the height of the chord
  

}

Add some useful ecuations over a circle.
Add some useful ecuations over a circle.
