New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A truck tyre completes 66 revolutions to move 5808 metres.

    Find the diameter of the tyre. (Take π = 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 = 5808 metres

    Circumference = 5808 ÷ 66 = 88 metres

    Let the radius be x metres

    Circumference = 2πr

    ATQ:

    88 = 2 × (22/7) × x

    x = 14

    Diameter = 14 × 2 = 28 metres

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