Questions in circle

Select	Question
	Circle ${{x}^{2}}+{{y}^{2}}+6y=0$ touches
	The circle represented by the equation ${{x}^{2}}+{{y}^{2}}+2gx+2fy+c=0$ will be a point circle, if
	The equation of the circle having centre $(1,\ -2)$ and passing through the point of intersection of lines $3x+y=14$ , $2x+5y=18$ is
	For the circle ${{x}^{2}}+{{y}^{2}}+6x-8y+9=0$ , which of the following statements is true
	Equation of the circle which touches the lines $x=0,\ y=0$ and $3x+4y=4$ is
	For the line $3x+2y=12$ and the circle ${{x}^{2}}+{{y}^{2}}-4x-6y+3=0$ , which of the following statements is true
	The locus of the centre of the circle which cuts a chord of length 2a from the positive x-axis and passes through a point on positive y-axis distant b from the origin is
	The equation of circle passing through (4, 5) and having the centre at (2, 2), is
	A circle touches x-axis and cuts off a chord of length 2l from y-axis. The locus of the centre of the circle is
	Radius of circle $(x-5)(x-1)+(y-7)(y-4)=0$ is