Length of the tangents from the point (1, 2) to the circles `x^2+y^2+x+y-4=0` and `3x^2+3y^2-xy-k=0` in the ratio 4:3, then k is equal to

Length of the tangents from the point (1,2) to the circles x^(2)+y^(2)+x+y-4=0 and 3x^(2)+3y^(2)-x-y-k=0 are in the ratio 4:3 , then k is equal to a) (37)/(2) b) (4)/(37) c)21 d) (39)/(4)

The length of the tangent from the point (1,-4) to the circle 2x^2+2y^2-3x+7y+9=0

The length of the tangent from the origin to the circle 3x^2 +3y^2-4x-6y+2=0 is

If the length of the tangent from (1,2) to the circle x^(2)+y^2+x+y-4=0 and 3x^(2)+3y^(2)-x+y+lambda=0 are in the ratio 4:3 then lambda=

If the length of the tangent from (1,2) to the circle x^(2)+y^2+x+y-4=0 and 3x^(2)+3y^(2)-x-y-lambda=0 are in the ratio 4:3 then lambda=

The length of the tangent from the point (-1,1) to the circle x^(2)+y^(2)-4x+k=0 equal to 2 then k=

The length of the tangent from the point (1, -4) to the circle 2x^(2) + 2y^(2) - 3x + 7y + 9 = 0 is

The length of the tangent from (5, 1) to the circle x^2+y^2+6x-4y-3=0 is :