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How to Calculate the Circumference of a 50 cm Diameter Circle

Learn how to calculate the circumference of a circle with a 50 cm diameter using the formula C = πd.

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Video transcript

The circumference of a circle can be calculated using the formula C = πd, where π is approximately 3.14159 and d is the diameter. For a circle with a 50 cm diameter, the calculation is C = 3.14159 * 50, resulting in approximately 157.08 cm. Remember to use π to as many decimal places as required for precision.

Questions and answers

  1. What is the formula for calculating circumference?

    The circumference of a circle can be calculated using the formula C = πd, where d is the diameter.

  2. Why is π important in geometry?

    π (pi) is a constant that relates the circumference of a circle to its diameter and is essential for various calculations in geometry.

  3. How do I find the diameter if I know the circumference?

    You can find the diameter using the formula d = C/π, where C is the circumference.

  4. What is the approximate value of π?

    The approximate value of π is 3.14159, but it can be used to many decimal places for more accuracy.

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For more tips on geometry and math calculations, consider checking out our videos on area calculation techniques and properties of circles.