How to Calculate the Missing Diameter of a Circle

Learn how to find the missing diameter of a circle using radius and circumference formulas effectively.

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To find the missing diameter of a circle, use the formula: Diameter = 2 × Radius. If only the circumference (C) is known, use the relation Diameter = C / π. For example, if the circumference is 31.4 units, the diameter is 31.4 / 3.14 = 10 units. This approach ensures you can calculate the diameter accurately even if only partial information is available.

FAQs & Answers

  1. What is the formula for finding the diameter of a circle? The diameter can be found using the formula: Diameter = 2 × Radius.
  2. How do you find the diameter from the circumference? Use the formula: Diameter = Circumference ÷ π. For a circumference of 31.4, the diameter is 10.
  3. Is the diameter always twice the radius? Yes, the diameter is always twice the length of the radius of a circle.
  4. Can you calculate diameter without knowing the radius? Yes, you can calculate the diameter from the circumference using Diameter = Circumference ÷ π.

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