" Q.8.The radius of the circle "4x^(2)+4y^(2)-10x+5y+5=0" is "

State which of the following is the radius of the circle x^(2) + y^(2) + 4x - 8y - 5 = 0 ?

The y-intercept of the circle x^(2)+y^(2)+4x+8y-5=0 is

The y-intercept of the circle x^(2)+y^(2)+4x+8y-5=0 is

The y-intercept of the circle x^(2)+y^(2)+4x+8y-5=0 is

Equation of radical axis of the circles x^(2) + y^(2) - 3x - 4y + 5 = 0 and 2x^(2) + 2y^(2) - 10x - 12y + 12 = 0 is

Find'the centre and radius of the circle (i) x^(2) +y^(2) + 4x - 1 = 0 (ii) 2 x^(2) + 2y^(2) = 3x - 5y + 7

Find the equation of radical axis of the circles x^(2)+y^(2)-3x+5y-7=0 and 2x^(2)+2y^(2)-4x+8y-13=0 .