Question

The diameter of a wheel of a car is 75.6 cm. If the wheel makes 7000 rotation in one minute, how long will it take for the car to cover a distance of 332.64 km?

Answer 1

75.6*7000=529200cm/min
332.64*100000=33264000cm
33264000/529200=62.86 minutes

Answer 2

$perimeter \: of \: circle = 2\pi \times r \\ = 2 \times (22 \div 7 ) (75.6 \div 2) \\ = 237.6 \: \\ \\ no.of \: rounds \: = 237.6 \div 332.64 = 0.00714285714$