A 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 10 cm. Find the radius of the circle.
Join the points O,P,T .It forms like a triangle whose hypotenuse is 26cm altitude is 10cm then
Base = (26*26) - (10*10)
= 576
Radius = √576
= 24