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In the figure, O is the centre of the ci...

In the figure, O is the centre of the circle of radius 29 cm, `OP bot AB, OQ bot CD` and AB is parallel to CD. If AB = 40 cm and CD = 42 cm, then the length of PQ is:
दी गयी आकृति में, O वृत्त का केंद्र है जिसकी त्रिज्या 29 सेमी है ,`OP bot AB, OQ bot CD` और AB, CD के समान्तर है। यदि AB= 40 सेमी और CD = 42 सेमी है, तो PQ की लंबाई है

A

32

B

20

C

41

D

21

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