PAB and PCD are two secants to a circle....

PAB and PCD are two secants to a circle. If PA = 10 cm, AB = 12 cm and PC = 11 cm, then what is the value (in cm) of PD?

A

18

B

9

C

20

D

12

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2017 TIER-II PAPER(10)
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2017 TIER-II PAPER(12)
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