Centre of the circle whose radius is 3 and which touches internally the circle `x^(2)+y^(2)-4x-6y-12=0` at the point (-1 -1) is

The centre of the circle whose radius is 5 and which touches the circle x^(2)+y^(2)-2x-4y-20=0 at (5,5) is

The centre of the circle whose radius is 5 and which touches the circle x^(2)+y^(2)-2x-4y-20=0 at (5,5) is

The equation of the cirele which passes through the point (1,1) and touches the circle x^(2)+y^(2)+4x-6y-3=0 at the point (2,3) on it is

Find the equation of the circle which passes through the point (1, 1) & which touches the circle x^(2) + y^(2) + 4x – 6y – 3 = 0 at the point (2, 3) on it.

Locus of centre of a circle of radius 2, which rolls on the outside of circle x^(2)+y^(2)+3x-6y-9=0 is

Difference in values of the radius of a circle whose center is at the origin and which touches the circle x^(2)+y^(2)-6x-8y+21=0 is