Multiple Choice Questions on A horse takes 2 frac12 seconds to complete a round around a circular field If the speed of the horse........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A horse takes 2 frac12 seconds to complete a round around a circular field If the speed of the horse...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    A horse takes 2 ½ seconds to complete a round around a circular field. If the speed of the horse was 66 m/sec, then the radius of the field is,  { given π=22/7 }

    25.62 m

    Incorrect Answer

    26.52 m

    Incorrect Answer

    25.26 m

    Incorrect Answer

    26.25 m

    Correct Answer
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    Explanation:

    Perimeter of the circle = Time taken × Speed
    = 66 × 2 ½
    = 66 × 5/2
    = 33 × 5 = 165 m
    2πr= 165
    2 × 22/7  × r   = 165
    r = (165 × 7)  / (2 × 22)
    r = 26.25 m

    By: MIRZA SADDAM HUSSAIN
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