Understanding the Circumference of a Circle: Is it Twice the Radius?

Learn why circumference is not twice the radius and discover the correct formula to calculate it.

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No, the circumference is not twice the radius. The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius. This means the circumference is actually approximately 6.28 times the radius.

FAQs & Answers

  1. What is the formula for circumference? The formula for the circumference of a circle is C = 2πr, where r is the radius.
  2. How do you calculate the radius from the circumference? You can calculate the radius by rearranging the formula: r = C / (2π).
  3. Is the diameter twice the radius? Yes, the diameter of a circle is twice the radius.
  4. What is the relationship between diameter and circumference? The circumference is equal to π times the diameter: C = πd, where d is the diameter.

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