`r_(1),r_(2)` are the radii of two non-intersecting circles having `A,B` as centres.If `P` is the centre of `AB` then the perpendicular distance of `P` form their radical axis is

r_1, r_2 are the radii of two non intersecting circles having A , B as centres. If 'P' is the mid- point of AB ,then the perpendicular distance of P from their radical axis is

Two intersecting circles have their radii 1 and sqrt(3) meters. The distance between their centres is 2 meters. Then the overlapping area in sq. meters is

R and r are the radii of two circles (R > r). If the distance between the centres of the two circles be d, then length of common tangent of two circles is

If the radical axis of two circles with centres A and B bisects AB then their radii are in the ratio

(a,c) and (b,c) are the centres of two circles whose radical axis is the y-axis.If the radius of the first circle is r then the diameter of the other circle is

If from any point P, tangents PT, PT' are drawn to two given circles with centres A and B respectively, and if PN is the perpendicular from P on their radical axis, then PT^(2) – PT'^(2) =

The radical axis of two circles whose centres are ( 3,4), (-1,2) and each passing through the centre of the other is

If a circle S intersects circles S_1 and S_2 orthogonally. Prove that the centre of S lies on the radical axis of S_1 and S_2 .