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The diameter of a wheel is 49 cm. The nu...

The diameter of a wheel is 49 cm. The number of revolutions in which it will have to cover a distance of 770 m, is:
एक पहिया का व्यास 49 सेमी है। चक्कर की संख्या जिसमें इसे 770 मीटर की दूरी तय करनी होगी, वह है:

A

400

B

600

C

700

D

500

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