How to Calculate Radius from Circumference: A Quick Guide

Learn how to find the radius when given the circumference using the formula r = C / (2π).

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To find the radius (r) when the circumference is given, use the formula: r = C / (2π). Here, 'C' represents the circumference, and π (Pi) is approximately 3.14159. Simply divide the given circumference by 2π to get the radius.

FAQs & Answers

  1. What is the formula to find the radius from circumference? The formula to find the radius is r = C / (2π), where C is the circumference.
  2. Why is Pi important in calculating the radius? Pi is a constant that relates the circumference of a circle to its diameter, making it essential for radius calculations.
  3. How do I calculate the circumference if I know the radius? Use the formula C = 2πr, where r is the radius.
  4. Can the formula for radius be used for any circle? Yes, the formula r = C / (2π) can be used for any circle, regardless of size.

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