The circle of radius 4 cm and centre O has a tangent PR. If&

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The circle of radius 4 cm and centre O has a tangent PR. If \angle POR=90^\circ∠POR=90∘ and OR = 7 cm and OP = 24 cm. Calculate the length (in cm) of PR.

[SSC CHSL 22 March 2018 Evening Shift]

A 20

B 24

C 25

D 35