If the circle `x^2+y^2=1` is completely contained in the circle `x^2+y^2+4x+3y+k=0` , then find the values of `kdot`

If the line y=sqrt(3)x+k touches the circle x^(2)+y^(2)=16, then find the value of k

Find the equation of the circle which is concentric with the circle x^2 +y^2 - 4x+6y-3=0 and the double of its area.

If y = 2x + m is a diameter to the circle x^(2) + y^(2) + 3x + 4y - 1 = 0 , then find m

If circle x^(2)+y^(2)-x+3y+m=0 bisect the circumference of circle x^(2)+y^(2)-2x+2y+1=0 then value of m is

If y = 2x + K is a diameter to the circle 2(x^(2) + y^(2)) + 3x + 4y –1 = 0 , then K equals

The line 4x+2y+k=0 divides the circumference of the circle x^(2)+y^(2)=100 in the ratio 1:2 then the value of 'k' is

The circle x^(2)+y^(2)=4 cuts the circle x^(2)+y^(2)-2x-4=0 at the points A and B. If the circle x^(2)+y^(2)-4x-k=0 passes through A and B then the value of k , is

Equation of the circle concentric with the circle x^(2) + y^(2) + 8x + 10 y - 7 = 0 , and passing through the centre of the circle x^(2) + y^(2) - 4x - 6y = 0 ,is

If the circle 3x^(2)+3y^(2)+10x+y-27=0 bisects the circumference of the circle x^(2)+y^(2)=k then k^(2)