Understanding the Relationship Between Radius and Diameter of a Circle

Learn why the radius is half the diameter in circles, clarifying common misconceptions.

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No, the radius is not twice the measure of the diameter. The radius is half of the diameter. For a circle, the diameter is the longest distance from one edge to the opposite edge, passing through the center, while the radius is the distance from the center to any point on the edge. In a formula, radius = diameter / 2.

FAQs & Answers

  1. What is the formula for calculating the radius? The formula for radius is radius = diameter / 2.
  2. How is the diameter defined? The diameter is the longest distance across a circle, passing through its center.
  3. Why is the radius half the diameter? The radius measures the distance from the center to the edge, which is half of the full diameter.

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For more on circle geometry, check out our other videos explaining circumference, area, and more mathematical concepts for better understanding.

  1. Understanding the Relationship Between Diameter and Radius Learn why the diameter is not half of the radius, and discover the correct formula to calculate them.