In a circle of radius 7cm, tangent PT is drawn from point P such that PT= 24cm. If O is the centre of the circle, then the length of OP is:
31cm
28cm
25cm
30cm
In the given figure, point P is 26 cm away from the centre O of a circle and the length PT of the tangent drawn from P to the circle is 24 cm. Then the radius of the circle is
(a) 10 cm (b) 12 cm (c) 13 cm (d) 15 cm