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10th Class Mathematics Areas Related to Circles Question Bank Area of Circle

  • question_answer
    A race track is in the form of a circular ring that has inner and outer circumferences are 500 m and 599 m respectively. What is the width of the track?

    A)  11 m                           

    B)  22 m           

    C)  15.75 m 

    D)  10.75 m

    Correct Answer: C

    Solution :

    (c): \[2\pi r=500\]\[\Rightarrow \]\[r=\frac{500}{2\pi };2\pi R=599\]\[\Rightarrow \]\[R=\frac{599}{2\pi }\]       Width of the track = R ? r           


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