defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Circles Elements of a Circle
If a circle C passing through the point (4, 0) touches the circle x2 + y2 + 4x - 6y = 12 externally at the point (1, -1), then the radius of C is
1
\(\sqrt{57}\)
2
4
3
\(2\sqrt{5}\)
4
5