R is a point outside a circle and is 18 cm away from its centre. A secant drawn from the point R intersects the circle at points A and B in such a way that RA = 7 cm and AB = 5 cm. The radius of the circle (in cm) is:
A
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B
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C
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D
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Question: R is a point outside a circle and is 18 cm away fr... - PrepLeague