How to Calculate Circumference
The circumference of a circle is the distance around it. To calculate the circumference, you can use one of the following formulas:
Using the Diameter
If you know the diameter (d) of the circle, the formula is:
C = π × d
Using the Radius
C = 2 × π × r
Understanding π (Pi)
In both formulas, π (Pi) is a constant approximately equal to 3.14159. It represents the ratio of the circumference of a circle to its diameter.
Example Calculation
For example, if a circle has a radius of 5 units, the circumference can be calculated as:
C = 2 × π × 5 = 10π ≈ 31.42 units
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