Multiple Choice Questions on The ratio of the outer and the inner perimeters of a circular path is 9 8 The path is 3 metres wide ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The ratio of the outer and the inner perimeters of a circular path is 9 8 The path is 3 metres wide ...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    The ratio of the outer and the inner perimeters of a circular path is 9 : 8. The path is 3 metres wide. What is the diameter of the outer circle?

    20 m

    Incorrect Answer

    54 m

    Correct Answer

    35 m

    Incorrect Answer

    39 m

    Incorrect Answer
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    Explanation:

    Answer & Explanation
    27 m
    Explanation: 
    2?r/2?R = 9/8
    So r/R = 9/8, so r = (9/8)R
    r-R = 3, so (9/8)R – R = 3
    R = 24, so r = (9/8)*24 = 27
    Diameter=27x2=54

    By: MIRZA SADDAM HUSSAIN
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    zwaladeep

    Question asked dimeter but answer is radius

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