How to Calculate Radius from Circumference: A Simple Guide

Learn how to find the radius when you have the circumference using a simple formula with examples.

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To find the radius when you have the circumference, use the formula radius = circumference / (2 * π). For example, if the circumference is 31.4 units, the radius would be 31.4 / (2 * 3.14) = 5 units. This method provides a quick and accurate way to determine the radius from the circumference.

FAQs & Answers

  1. What is the formula for calculating radius from circumference? The formula is radius = circumference / (2 * π).
  2. How do you find circumference using radius? You can find circumference using the formula circumference = 2 * π * radius.
  3. What does π represent in the radius formula? π (pi) is a mathematical constant approximately equal to 3.14, representing the ratio of a circle's circumference to its diameter.
  4. Can you give an example of calculating radius? Sure! If the circumference is 31.4 units, the radius is calculated as 31.4 / (2 * 3.14) = 5 units.

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For more mathematical insights, check out our other videos on geometry and algebra, where we cover various formulas and problem-solving techniques.

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