Circles Test 2...

Equation of the circle whose radius is 3 and centre is $$(-1,2)$$

The equation of circle at center $$(3,4)$$ and radius $$5$$.

The product of perpendicular drawn from the origin to the lines represented by the equation $$ax^{2}+2hxy+by^{2}+2gx+2fy+c=0$$, will be:

The equation of the image of the circle $${ \left( x-3 \right)  }^{ 2 }\quad +\quad { \left( y-2 \right)  }^{ 2 }\quad =1\quad in\quad the\quad mirror\quad x+y=19\quad is$$

If the equation $$p{ x }^{ 2 }+(2-q)xy+3{ y }^{ 2 }-6qx+30y+6q=0$$ represents a circle, then the values of p and q are

Equation of the circle whose radius is $$a+b$$ and centre $$(a, -b)$$

If  $$y ^ { 2 } - 2 x - 2 y + 5 = 0$$  is

A circle passes through $$A(1,2)$$ and the equations of the normal to the circle is $$x+2y=5$$. If the circle passes through $$B(-5,5)$$, then the radius of the circle is

The equation of circle with centre (1, 2) and tangent $$x + y - 5 = 0$$ is

If $$  x^{2}+y^{2}-2 x+2 a y+a+3=0  $$ represents a real circle with non-zero radius, then most appropriate is