If centre lies on "x" - axis then the equation of circle is of form -

The equation of X-axis is of the form

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

A circle touches y-axis at (0, 2) and has an intercept of 4 units on the positive side of x-axis. The equation of the circle, is

The vertex of the parabola y^2 = 8x is at the centre of a circle and the parabola cuts the circle at the ends of itslatus rectum. Then the equation of the circle is

A circle is drawn whose centre is on the x - axis and it touches the y - axis. If no part of the circle lies outside the parabola y^(2)=8x , then the maximum possible radius of the circle is

If the line 3x-2y + 6=0 meets X-axis and Y-axis respectively at A and B, then find the equation of the circle with radius AB and centre at A.

Centre of a circle of radius 4sqrt(5) lies on the line y=x and satisfies the inequality 3x+6y > 10. If the line x+2y=3 is a tangent to the circle, then the equation of the circle is

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.

A circle of radius 2 lies in the first quadrant and touches both the axes. Find the equation of the circle with centre at (6,5) and touching the above circle externally.

Obtain the equation of the circle, radius 2 units, which lies in the positive quadrant and touches both axes of co-ordinates. Find also the equation of the circle, with centre (6, 5) which touches the above circle externally.