The line `5x - y = 3` is a tangent to a circle at the point `(2, 7)` and its centre is on theline `x + 2y = 19`. Find the equation of the circle.

If the line 2x-y+1=0 touches the circle at the point (2,5) and the centre of the circle lies in the line x+y-9=0. Find the equation of the circle.

The line 2x-y+1=0 is tangent to the circle at the point (2, 5) and the centre of the circle lies on x-2y=4. The square of the radius of the circle is

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the center of the circle lies on x-2y=4. Then find the radius of the circle.

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4 The radius of the circle is:

The line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circles lies on x-2y=4. The radius of the circle is :

A circle has radius 3 units and its centre lies on the line y=x-1. Find the equation of the circle,if it passes through (7,3) .

A circle has radius 3 units and its centre lies on the line y=x-1. Find the equation of the circle if it passes through (7,3).

If centre of the circle lies on x+y=2 and it touches the line x=3 and y=2 . Find the dismeter of the circle.

A circle is tangent to line 3x-4y+1=0 at (1,1) and is normal to line 2x+y-5=0 .then find the equation of circle