How to Calculate the Radius from Circumference: A Step-by-Step Guide

Learn the simple formula to find the radius using circumference with practical examples and clear explanations.

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To find the radius using the circumference, use the formula radius = circumference / (2 * π)\. Plug the circumference value into the formula and divide by 6.28 (since 2π ≈ 6.28). For example, if the circumference is 31.4 units, radius = 31.4 / 6.28 = 5 units.

FAQs & Answers

  1. What formula do I use to find the radius from circumference? Use the formula: radius = circumference / (2 * π), where π is approximately 3.14.
  2. How do I calculate circumference if I have the radius? Use the formula: circumference = 2 * π * radius.
  3. Can I find the radius if I only know the diameter? Yes, simply divide the diameter by 2 to get the radius.
  4. What is the relation between diameter and circumference? The circumference is equal to π times the diameter (circumference = π * diameter).

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