A cart wheel has a diameter of 70 cm. Taking π = 22/7, how many complete revolutions will it make in covering 1.1 km?
Correct answer A. 500
Explanation
Circumference = πd = 22/7 × 70 = 220 cm and 1.1 km = 110000 cm. Revolutions = 110000 / 220 = 500.
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