How to Calculate the Circumference of a Circle: Example with Diameter 4

Learn to calculate the circumference of a circle given its diameter. Discover how to apply the formula easily in real-life situations.

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The circumference of a circle can be calculated using the formula C = πd. If the diameter is 4 units, the circumference C = π * 4. Using an approximate value for π (3.1416), the circumference is about 12.57 units. This formula is handy for various applications, from planning circular layouts to understanding wheel sizes.

FAQs & Answers

  1. What is the circumference formula? The circumference of a circle is calculated using the formula C = πd, where d is the diameter.
  2. How do I apply the circumference formula? To apply the circumference formula, simply multiply the diameter of the circle by π (approximately 3.1416).
  3. Why is understanding circumference important? Understanding circumference is important for various applications, such as planning circular layouts or working with wheels.
  4. What if I have the radius instead of the diameter? If you have the radius, you can find the circumference using the formula C = 2πr, where r is the radius.

Watch More

For more insights on geometric calculations, check out our video on area and perimeter of different shapes for practical applications in real life.

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