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In the figure, chords AB and CD of a cir...

In the figure, chords AB and CD of a circle intersect externally at P. If AB = 4cm, CD =11cm and PD=15cm, then the length of PB is:
दी गयी आकृति में, जीवा AB और CD एक वृत्त को बाहरी रूप से P पर काटते हैं। यदि AB = 4cm, CD =11 cm और PD = 15cm है, तो PB की लंबाई ज्ञात करे |

A

8 cm

B

12 cm

C

10 cm

D

14 cm

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