Question

Lenght of a tangent segment drawn from a point which is at a distance between thier centres is 12 . What is the radius of each circle.​

Answer 1

In △PAO:

Applying pythagoras theorem

⇒PA² + AO² = PO²

⇒12² + r² = (12.5) ²

⇒r² = 156.25 - 144

⇒r² = 12.25

⇒ r = √12.25cm

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