Multiple Choice Questions on The radius of a circle is increased so that its circumference increases by 15 The area of the circle........... for CDS Exam Preparation

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Multiple Choice Questions

The radius of a circle is increased so that its circumference increases by 15 The area of the circle...........

Quantitative Aptitude (CDS) Mensuration 2D
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    The radius of a circle is increased so that its circumference increases by 15%. The area of the circle will increase by

    31.25%

    Incorrect Answer

    32.25%

    Correct Answer

    33.25%

    Incorrect Answer

    34.25%

    Incorrect Answer
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    Explanation:

    As, % change in circumference = % change in radius
    => 15% change in circumference = 15 % change in radius
    Area of circle increased = 15 + 15 + (15×15)/ 100
    = 30 + 2.25 = 32.25%

    By: Munesh Kumari
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