The wheel of a car has 210 cm diameter. ...

The wheel of a car has 210 cm diameter. How many revolutions per minute must the wheel make so that the speed of the car is kept at 120 km/h?
एक कार के पहिये का व्यास 210 cm है। पहिया प्रति मिनट कितने चक्कर लगाना चाहिए ताकि कार की गति 120 किमी / घंटा रखी जाए?

326.42

245

303.03

289

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