Question

O is the center of the circle and PT is the tangent drawn from the point P to the circle. Secant PAB passes through the center O of the circle. If PT = 15cm and PA = 9 cm, then find the radius of the circle.

Answer 1

Two concentric circles are of radii 5 cm and 3 cm. Find the length of the chord of the larger circle which touches the smaller circle. OR A tangent PQ at a point P of a circle of radius 5 cm meets a line through the centre O at a point Q so that OQ = 13 cm. Find the length of PQ. hu