Circles of radii 3 and 4 intersect orthogonally The area common to the two circles is

If two circles each of unit radius intersect orthogonally,the common area of the circles is

The circles having radii r1 and r2 intersect orthogonally Length of their common chord is

The circles having radii r_1 and r_2 intersect orthogonally. Length of their common chord is

Circles of radii 36 and 9 touches externally. The radius of the circle which touches the two circles externally and also their common tangent is

The circles having radii r_1 and r_2 intersect orthogonally. Find the length of their common chord.

The circles having radii r_(1) andr _(2) intersect orthogonally.The length of their common chord is

The circles having radii r_1a n dr_2 intersect orthogonally. The length of their common chord is

Circles |z-1|=3,|z-z_(0)|=4 intersect orthogonally,then