A circle with centre (3, 4) passes through the origin.
Check whether the point (-2, 1) lies on this circle.

Equation of the circle with centre on the y-axis and pussing through the origin und the point (2, 3) is :

The circle, which passes through the origin and whose centre lies on the line y = x and cutting the circle x^2+y^2-4x-6y+10 = 0 orthogonally is :

If y=3 x is a tangent to a circle with centre (1,1) then the other tangent drawn through (0,0) to the circle is

Find the equation of the circle with centre at (1,-2) and passing through the centre of the circle x^2+y^2-4x+1=0

The equation of circle having centre at (2,2) and passes through the point (4,5) is

Find the equation of the circle which passes through the origin and belonges to the co-axial of circles whose limiting points are (1,2) and (4,3).

If a circle of constant radius 3k passes through the origin and meets the axes in A and B, then the locus of the centroid of triangleOAB is :

Find the radius of a circle whose centre is (-5,4) and which passes through the point (-7,1)

A variable chord of the circle x^2 + y^2 - 2 ax = 0 is drawn through the origin. Then the locus of the centre of the circle drawn on this chord as diameter is: