If the distance between the centers of two circles of unit radii is `1`, the common area of the circles is

Let C_(1) and C_(2) be two circles of unit radii, if the distance between the centers of two circles is 1, the common area of the circles is (api)/(b)+sqrt(b)/a . Then ab = ?

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 distance between the centres of two circles of radii 3,4 is 25 then the length of the transverse common tangent is

R and r are the radius of two circles (R gt r) . If the distance between the centre of the two circles be d , then length of common tangent of two circles is

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

Find the distance between the centres of the two circles, if their radii are 11 cm and 7 cm, and the length of the transverse common tangent is sqrt(301) cm .

The distance between the centres of the two circles of radii r_1 and r_2 is d. They will thouch each other internally if

The distance between the centres of two circles having radii 9 cm and 4 cm is 13 cm. What is the length of the direct common tangent of these circles ?

Two circles touch externally and sum of their areas is 130picm^2 and the distance between their centres is 14 cm. What is the difference in the radii of the circles ?