The equation of the circle concentric with `x^(2)+y^(2)-6x+4y-3=0` and having radius 5 is

Answer the following:Find the equation of the circle concentric with x^2+y^2-4x+6y=1 and having radius 4 units.

Find the equation.of the circle concentric with the x^(2)+y^(2)+4x-8y-6=0 and having radius double of its radius.

Find the equation. of the circle concentric with the x^2 +y^2 + 4x-8y-6=0 and having radius double of its radius.

The equation of the circle concentric to the circle 2x^(2)+2y^(2)-3x+6y+2=0 and having double the area of this circle, is

The equation of the circle concentric to the circle 2x^(2)+2y^(2)-3x+6y+2=0 and having double the area of this circle, is

The circle concentric with x^(2)+y^(2)+4x+6y+3=0 and radius 2 is

The circle concentric with x^(2)+y^(2)+4x+6y+3=0 and radius 2 is

The circle concentric with x^(2)+y^(2)+4x+6y+3=0 and radius 2 is

(i) Find the equation of a circle , which is concentric with the circle x^(2) + y^(2) - 6x + 12y + 15 = 0 and of double its radius. (ii) Find the equation of a circle , which is concentric with the circle x^(2) + y^(2) - 2x - 4y + 1 = 0 and whose radius is 5. (iii) Find the equation of the cricle concentric with x^(2) + y^(2) - 4x - 6y - 3 = 0 and which touches the y-axis. (iv) find the equation of a circle passing through the centre of the circle x^(2) + y^(2) + 8x + 10y - 7 = 0 and concentric with the circle 2x^(2) + 2y^(2) - 8x - 12y - 9 = 0 . (v) Find the equation of the circle concentric with the circle x^(2) + y^(2) + 4x - 8y - 6 = 0 and having radius double of its radius.