How do you calculate the circumference of a circle?

By Forinfos - 31/03/2026 - 0 comments

To calculate the circumference of a circle, multiply the diameter of the circle in question by pi. You need to know the diameter of the circle to complete this task.

  1. Measure the radius

    Measure the distance from the center of the circle to the circumference. This is the radius of the circle.

  2. Calculate the diameter

    Multiply the radius of the circle in question by two to get the diameter.

  3. Calculate the circumference

    Multiply pi by the diameter to get the circumference of the circle. For instance, if the diameter of the circle is 20 centimeters, the circumference of the same circle is the product of 20 centimeters and 3.14, which is 62.8 centimeters.

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