How to Calculate Radius from Circumference: A Simple Guide

Learn how to easily calculate the radius from circumference using a simple formula. Perfect for math students and enthusiasts!

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To find the radius from the circumference, use the formula: `radius = circumference / (2 π)`. For instance, if the circumference is 31.4 units, the radius would be `31.4 / (2 3.14) = 5` units.

FAQs & Answers

  1. What is the formula for circumference? The formula for circumference is `C = 2πr`, where `C` is circumference and `r` is radius.
  2. How do I calculate circumference if I have the radius? To calculate circumference from the radius, use the formula `C = 2πr`, where `π` is approximately 3.14.
  3. What is the relationship between radius and diameter? The diameter is twice the radius, so `diameter = 2 * radius`.
  4. Why is knowing how to calculate radius important? Calculating the radius is essential in various applications including geometry, engineering, and real-world problem-solving.