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Asked in a 2000 paper

The number of rounds that a wheel of diameter 7/11 m will make in going 4 km is:_________?

Correct answer: D. 2000

  • A. 1000
  • B. 1500
  • C. 1700
  • D. 2000

Explanation

The wheel's circumference is πd = (22/7) × (7/11) m = 2 m per revolution. The distance is 4 km = 4000 m, so the number of rounds is 4000 m ÷ 2 m = 2000 rounds; option a, 1000 rounds, uses only half the required distance per calculation.

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