How to Calculate the Circumference of a Circle with a 20 cm Diameter

Learn to calculate the circumference of a circle with a 20 cm diameter using the formula Circumference = π × Diameter.

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To find the circumference of a circle with a diameter of 20 cm, use the formula: Circumference = π × Diameter. Therefore, Circumference = π × 20 cm ≈ 62.83 cm. This calculation helps you determine the distance around the circle.

FAQs & Answers

  1. What is the formula for circumference? The formula for the circumference of a circle is Circumference = π × Diameter.
  2. How do you find the diameter if you know the circumference? To find the diameter from the circumference, use the formula: Diameter = Circumference ÷ π.
  3. What does π represent in circumference calculation? π (pi) is a mathematical constant approximately equal to 3.14159, representing the ratio of a circle's circumference to its diameter.
  4. Why is circumference important in geometry? Circumference is important as it measures the total distance around a circle, which is essential in various fields including engineering and architecture.

Watch More

For more insights on circle measurements, check out our videos on radius and area of circles to enhance your understanding of geometry.

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