Multiple Choice Questions on The radius of a circle is 4 m What is the radius of another circle whose area is 16 times of that fi........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The radius of a circle is 4 m What is the radius of another circle whose area is 16 times of that fi...........

Quantitative Aptitude ( CCS) Mensuration 2D
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    The radius of a circle is 4 m. What is the radius of another circle whose area is 16 times of that first?

    16 m

    Correct Answer

    64 m

    Incorrect Answer

    256 m

    Incorrect Answer

    400 m

    Incorrect Answer
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    Explanation:

    Ratio of areas = (ratio of radii)²
    16/1 = (ratio of radii)²
    ratio of radii = 4/1
    The required radius = 16 m

    By: Amit Kumar
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