How to Calculate Radius Without Diameter: Simple Formulas

Learn to find the radius using circumference or area of a circle. Explore easy formulas now!

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To find the radius without the diameter, you can use the circumference or area of the circle: Radius from Circumference: r = C / (2π) Radius from Area: r = √(A / π). These formulas allow you to derive the radius using either the circumference (C) or the area (A) of the circle.

FAQs & Answers

  1. What is the formula for radius using circumference? The formula to find radius using circumference is r = C / (2π).
  2. How do you calculate radius from area? You can calculate the radius from area using the formula r = √(A / π).
  3. Can I find the radius without knowing the diameter? Yes, you can find the radius using the circumference or area of the circle.
  4. Why is understanding radius important? Understanding radius is crucial in various areas of geometry, physics, and engineering as it helps to define the size of a circle.

Watch More

For more insights on geometric formulas, check out our videos on calculating area and circumference of circles, which further complement your understanding of circle geometry.

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