10th Class Mathematics Areas Related to Circles Question Bank Case Based (MCQs) - Areas Related to Circles

  • question_answer
    Find the area of the region having radius \[3\,cm\].          

    A) \[12.57\,c{{m}^{2}}\]

    B) \[14.8\,c{{m}^{2}}\]

    C) \[20\,c{{m}^{2}}\]

    D) \[26.57\,c{{m}^{2}}\]

    Correct Answer: A

    Solution :

    [a] Required area
    \[=\frac{22}{7}\times 3\times 3\times \frac{160{}^\circ }{360{}^\circ }=\frac{88}{7}=12.57c{{m}^{2}}\]
    So, option [a] is correct.

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