MathematicsA well of diameter 140 cm has a stone parapet around it. If the length of the outer edge of the parapet is 616 cm, what is the width of the parapet?

A well of diameter 140 cm has a stone parapet around it. If the length of the outer edge of the parapet is 616 cm, what is the width of the parapet?


  1. A
    28cm
  2. B
    14cm
  3. C
    35cm
  4. D
    42cm 

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    Solution:

    Given that, a diameter is 140 cm and length of the outer edge is 616 cm.
    Circumference of the circle = 2πr.
    The width of the parapet,
    The width of the parapet is 28cm.
    Therefore, the correct answer is option 1.
     

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