Multiple Choice Questions on A circular wire of diameter 42cm is folded in the shape of a rectangle whose sides are in the ratio ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A circular wire of diameter 42cm is folded in the shape of a rectangle whose sides are in the ratio ...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    A circular wire of diameter 42cm is folded in the shape of a rectangle whose sides are in the ratio 6:5. Find the ratio of the enclosed rectangle ?

    1080cm2

    Correct Answer

    1181cm2

    Incorrect Answer

    1250cm2

    Incorrect Answer

    1800cm2

    Incorrect Answer
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    Explanation:

    Answer & Explanation
    Answer – 1.1080cm2
    Explanation :
    Radius = 42/2 = 21cm
    Circumference = 2*22*21/7 = 132cm
    L:b = 6x:5x
    Perimeter of the rectangle = 2(6x+5x) = 22x
    22x = 132
    X = 6
    Area = 6x * 5x = 30x*x
    =30*6*6 = 1080cm2

    By: MIRZA SADDAM HUSSAIN
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