[" The radius of circle touching parabola "],[y^(2)=x" at "(1,1)" and having directrix of "],[y^(2)=x" as its normal is "]

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is

Let the radius of the circle touching the parabola y^(2)=x at (1, 1) and having the directrix of y^(2)=x as its normal is equal to ksqrt5 units, then k is equal to

The radius of the circle touching the parabola y^(2)=x at (1,1) and having the directrix of y^(2)=x as its normal is (a)(5sqrt(5))/(8) (b) (10sqrt(5))/(3) (c) (5sqrt(5))/(4) (d) none of these

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is (a)(5sqrt(5))/8 (b) (10sqrt(5))/3 (c)(5sqrt(5))/4 (d) none of these

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is (5sqrt(5))/8 (b) (10sqrt(5))/3 (5sqrt(5))/4 (d) none of these

The radius of the circle touching the parabola y^2=x at (1, 1) and having the directrix of y^2=x as its normal is (a)(5sqrt(5))/8 (b) (10sqrt(5))/3 (c)(5sqrt(5))/4 (d) none of these

Let the radius of the circle touching the parabola y^(2)=x at (1, 1) and having the directrix of y^(2)=x at (1, 1) and having the directrix of y^(2)=x as its normal is equal to ksqrt5 units, then k is equal to

The radius of the circle touching the line x+y=4" at "(1, 3) and intersecting x^(2)+y^(2)=4 orthogonally is

The radius of the circle touching the line x+y=4" at "(1, 3) and intersecting x^(2)+y^(2)=4 orthogonally is