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

Learn how to find the radius from the circumference using a simple formula: R = C / (2π).

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To get the radius from the circumference, use the formula Radius (R) = Circumference (C) / (2 * π). For example, if the circumference is 31.4 units, divide 31.4 by 6.28 (2 * π), yielding a radius of 5 units. This straightforward calculation helps you determine the radius efficiently.

FAQs & Answers

  1. What is the formula to find radius from circumference? The formula is Radius (R) = Circumference (C) / (2 * π).
  2. How do you calculate circumference given the radius? Circumference can be calculated using the formula C = 2 * π * R.
  3. What is π (pi) and why is it important? π (pi) is a mathematical constant approximately equal to 3.14, crucial for calculations involving circles.
  4. Can you provide an example of calculating radius from circumference? Sure! If the circumference is 31.4 units, the radius is 31.4 / 6.28, which equals 5 units.

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