त्रिभुज ABC में, P और Q क्रमशः AB और AC ...

त्रिभुज ABC में, P और Q क्रमशः AB और AC के मध्यबिंदु है । यदि PQ पर कोई बिंदु R इस प्रकार स्थित है कि PR : RQ = 3 : 5 और QR = 20 CM है, तो BC की लम्बाई (cm में) ज्ञात करें।

A

40

B

64

C

24

D

`66.66`

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The correct Answer is:

B

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