1.

In the given figure, TB is a chord which passes through the centre of the circle. PT is a tangent to the circle at the point T on the circle. If PT = 10 cm, PA = 5 cm and AB = x cm, then the radius of the circle is:

A. \(5\sqrt{3} \) cm
B. \(6\sqrt{3} \) cm
C. \(3\sqrt{3} \) cm
D. \(10 \sqrt{3}\) cm
Answer» B. \(6\sqrt{3} \) cm


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