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

  • question_answer
    Find the area of the top of the pit.

    A) \[38.5\,{{m}^{2}}\]

    B) \[40.5\,{{m}^{2}}\]

    C) \[41.5\,{{m}^{2}}\]

    D) None of these

    Correct Answer: A

    Solution :

    [a] Area of top of the pit
    \[=\pi {{\left( \frac{7}{2} \right)}^{2}}=\frac{22}{7}\times \frac{7}{2}\times \frac{7}{2}=\frac{77}{2}=38.5{{m}^{2}}\]


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