Multiple Choice Questions on The radii of two concentric circles are 68 cm and 22 cm The area of the closed figure bounded by the........... for SSC CGL Exam Preparation

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Multiple Choice Questions

The radii of two concentric circles are 68 cm and 22 cm The area of the closed figure bounded by the...........

Quantitative Aptitude (CGL) Mensuration 2D
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    The radii of two concentric circles are 68 cm and 22 cm. The area of the closed figure bounded by the boundaries of the circles is

    4140π sq.cm.

    Incorrect Answer

    4110π sq.cm.

    Correct Answer

    4080π sq.cm.

    Incorrect Answer

    4050π sq.cm.

    Incorrect Answer
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    Explanation:


    Area bounded by two circle is
    =πR^2−πr^2=π(68^2−22^2)
    =π(68+22)×(68−22)
    =π90×46=4140πsq.cm.

    By: MIRZA SADDAM HUSSAIN
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