Understanding the Radius, Diameter, and Center of a Circle

Explore the definitions of radius, diameter, and center of a circle in this brief Q&A video.

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Radius is the distance from the center of the circle to any point on its circumference. Diameter is twice the radius, extending straight across the circle through the center. The center of a circle is the point equidistant from all points on the circumference.

FAQs & Answers

  1. What is the formula for calculating the circumference of a circle? The circumference of a circle can be calculated using the formula C = πd, where d is the diameter.
  2. How do you determine the area of a circle? The area can be found using the formula A = πr², where r is the radius of the circle.
  3. What is the difference between radius and diameter? The radius is half of the diameter; it measures the distance from the center of the circle to its edge.
  4. Can a circle have more than one center? No, a circle has only one center point that is equidistant from all points on its circumference.

Watch More

If you found this video on circle properties helpful, check out our other videos on geometry basics and mathematical concepts to deepen your understanding.

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