The wheel of a vehicle is 0.7m in radius. Find the distance covered by it when it has made 1200m revolutions.
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Radius is 21 cm so the diameter is 42 cm. Circumference is Diameter * pi so that's about 132 cm. That's also how far the car with travel with one revolution of the wheel, so at 600 revolutions, you're going 79128 cm per minute = 0.79 km/minute = 47 km / hour
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