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      Question

      If a circular wheel covers a distance of 9240 metres in 105

      revolutions, find the diameter of the wheel. (Use Ο€ = 22/7)
      A 30 m Correct Answer Incorrect Answer
      B 28 m Correct Answer Incorrect Answer
      C 17 m Correct Answer Incorrect Answer
      D 36 m Correct Answer Incorrect Answer

      Solution

      ATQ,

      Distance = 9240 metres

      Circumference = 9240 Γ· 105 = 88 metres

      Let radius be x metres

      Circumference = 2Ο€r

      ATQ:

      88 = 2 Γ— (22/7) Γ— x

      x = 14

      Diameter = 2 Γ— 14 = 28 metres

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