From a point Q, 13 cm away from the cent...

From a point Q, 13 cm away from the centre of a circle, the length of tangent PQ to the circle is 12 cm. The radius of the circle (in cm) is

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A point P is 13cm from the centre of the circle.The length of the tangent drawn from P to the circle is 12cm. Find the radius of the circle.

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