How to Find the Diameter of a Circle with a Given Circumference

Learn how to calculate the diameter of a circle from its circumference using a simple formula. Perfect for math enthusiasts!

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The diameter of a circle with a circumference of 4.5 inches can be calculated using the formula C = πd. Rearranging this formula to solve for the diameter (d), we get d = C/π. Substituting the given circumference, d = 4.5/π, which approximately equals 1.43 inches.

FAQs & Answers

  1. What is the formula to find the diameter from circumference? The diameter can be found using the formula d = C/π, where C is the circumference.
  2. How do you calculate the circumference of a circle? The circumference can be calculated using the formula C = πd or C = 2πr, where r is the radius.
  3. What is the relationship between diameter and circumference? The diameter is directly related to the circumference through the relationship C = πd, indicating that circumference is proportional to the diameter.
  4. Can you calculate the diameter without knowing the radius? Yes, as long as you know the circumference, you can calculate the diameter using the formula d = C/π.

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