The radius of a circle, having minimum area, which touches the curve `y=4-x^(2)`and the lines y=|x|, is

The minimum area of circle which touches the parabolas y=x^(2)+1andy^(2)=x-1 is

The minimum area of circle which touches the parabolas y=x^(2)+1andy^(2)=x-1 is

The minimum area of circle which touches the parabolas y=x^(2)+1andy^(2)=x-1 is

The minimum area of circle which touches the parabolas y=x^2+1 and y^2=x-1 is

Equation of the circle of minimum radius which touches both the parabolas y=x^(2)+2x+4 and x-y^(2)+2y+4 is

The equation of the circle radius is 5 and which touches the circle x^(2)+y^(2)-2x-4y-20=0" at this point (5,5) is"

The equation of a line which touches both the curves y^(2)=4 x and 3 x^(2)-4 y^(2)=12 is

The radius of the circle passing through the point of intersection of the circle x^(2)+y^(2)=4 and the line 2x+y=1 and having minimum possible radius is sqrt((19)/(k)) then K is

The radius of the circle which touches the line x+y=0 at M(-1,1) and cuts the circle x^(2)+y^(2)+6x-4y+18=0 orthogonally,is