Mathematics
Two concentric circles are of radii 13 cm and 5 cm. Find the length of the chord of the outer circle which touches the inner circle.
Related Questions
The tangent to a circle of radius 6 cm from an external point P, is of length 8 cm. Calculate the distance of P from the nearest point of the circle.

The figure shows a circle of radius 9 cm with O as the centre. The diameter AB produced meets the tangent PQ at P. If PA = 24 cm, find the length of tangent PQ.

Two circles of radii 5 cm and 2.8 cm touch each other. Find the distance between their centres if they touch
(i) Externally
(ii) Internally
In figure (i) given below, triangle ABC is circumscribed, find x.
