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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...

SSC SSC CGL Tier 1 Medium Circles MCQ

Question

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. Find the radius of the circle in cm.

Options

A.

4√15

B.

5√15

C.

7√15

D.

3√15

circlesecantradiusgeometrylengths

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