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10th Class Mathematics Areas Related to Circles Question Bank MCQs - Areas Related to Circles

  • question_answer
    The area of an annulus, whose internal and external radii are \[{{r}_{1}}\] and \[{{r}_{2}}\] respectively, is:

    A) \[\pi (r_{2}^{2}-r_{1}^{2})\]

    B) \[\pi ({{r}_{2}}+{{r}_{1}})\]

    C) \[\pi ({{r}_{2}}-{{r}_{1}})\]

    D) \[\pi \,{{r}_{1}}{{r}_{2}}\]

    Correct Answer: A

    Solution :

    [a] \[\pi (r_{2}^{2}-r_{1}^{2})\] (Formula)


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