Multiple Choice Questions on Two circles are drawn with the same centre The circumference of the smaller circle is 44 cm and that........... for CDS Exam Preparation

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Multiple Choice Questions

Two circles are drawn with the same centre The circumference of the smaller circle is 44 cm and that...........

Quantitative Aptitude (CDS) Mensuration 2D
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    Two circles are drawn with the same centre. The circumference of the smaller circle is 44 cm and that of the bigger circle is double the smaller one. What is the area between these two circles?

    154 square cm

    Incorrect Answer

    308 square cm

    Incorrect Answer

    462 square cm

    Correct Answer

    616 square cm

    Incorrect Answer
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    Explanation:

    Given C1 = 2πr1 = 44  , r1 = 7                  C2 = 2πr2 = 88,  r2 = 14

    Area between circles = πr22 – πr12 = 22/7(142-72) = 462 cm2

    By: Munesh Kumari
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