MathematicsWhat is the ratio of the circumference of a circle to twice the diameter of the circle?

What is the ratio of the circumference of a circle to twice the diameter of the circle?


  1. A
    π  
  2. B
    π 2  
  3. C
    π 4  
  4. D
    π 6  

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    Solution:

    Let the radius of the circle be r and the circumference of the circle be . The diameter of the circle is 2r. To find the ratio of the circumference of a circle to twice the diameter of the circle, divide the circumference by twice the diameter of the circle.
    2πr 2(2r) = π 2  
    Hence, the correct option is 2.
     
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