Understanding the Chord Length Formula for Circles

Learn how to calculate the chord length of a circle using the formula L = 2 * sqrt(r² - d²).

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The formula for the chord of a circle is given by L = 2 * sqrt(r² - d²), where L is the length of the chord, r is the radius of the circle, and d is the perpendicular distance from the chord to the circle's center. This formula allows you to find the chord's length based on the radius and the distance to the circle's center.

FAQs & Answers

  1. What is a chord in geometry? A chord in geometry is a straight line segment whose endpoints both lie on the circle.
  2. How do you find the radius of a circle from the chord length? You can find the radius using the chord length formula by rearranging it to solve for radius.
  3. What is the perpendicular distance from the chord to the center? The perpendicular distance is the shortest distance from the chord to the center of the circle, which is used in the chord length calculation.
  4. Can the chord length formula be used for any circle? Yes, the chord length formula can be applied to any circle as long as you have the radius and the distance from the chord to the center.

Watch More

For further exploration of related mathematical concepts, check out our videos on circle properties and geometry fundamentals to deepen your understanding.

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