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

  • question_answer
    If the perimeter and the area of a circle are equal numerically, then the diameter of the circle is: (NCERT EXERCISE)

    A) \[\text{2 units}\]

    B) \[\pi \text{ units}\]

    C) \[\text{4 units}\]

    D) \[\text{7 units}\] 

    Correct Answer: C

    Solution :

    [c]  \[2\pi r=\pi {{r}^{2}}\]
    \[\Rightarrow \]   radius, \[r=2\]
    \[\Rightarrow \]   diameter, \[\text{2r}=\text{4}\]units.


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