Comedk
Circle
COMEDK 2020
MCQ+1 / -02020
If the circles \({x^2} + {y^2} - 2x - 2y - 7 = 0\) and \({x^2} + {y^2} + 4x + 2y + k = 0\) cut orthogonally, then the length of the common chord of the circles is
Comedk
COMEDK 2020
If the circles \({x^2} + {y^2} - 2x - 2y - 7 = 0\) and \({x^2} + {y^2} + 4x + 2y + k = 0\) cut orthogonally, then the length of the common chord of the circles is