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

  • question_answer
    The number of rounds that a wheel of diameter \[\frac{7}{11}m\] will make in going \[\text{4 km}\] is:

    A) 1500

    B) 1700  

    C) 2000

    D) 2500

    Correct Answer: C

    Solution :

    [c] Circumference of the wheel
    \[=\frac{7}{11}\pi m=\frac{7}{11}\times \frac{22}{7}=2m\]
    Number of revolutions
    \[=\frac{\text{Total distance covered}}{\text{Circumference of the wheel}}\]           
     \[=\frac{4000}{2}=2000\]


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