Find the radius of the circle that has its center at (0,-4) and passes through ( square root of 13, 2) Share with your friends Share 1 Varun.Rawat answered this Let O0,-4 be the centre of circle and A13,2 be a point on the circle.Now, radius, OA = 13-02 + 2+42 ⇒OA = 13 + 36⇒OA = 49⇒OA = 7 unitsSo, radius of circle = 7 units 3 View Full Answer