To find the circumference of a circle, you need to use the formula:
Circumference of circle = 2Ï€ x radius
where π (pi) is a mathematical constant approximately equal to 3.14159, and the radius is the distance from the center of the circle to any point on the edge of the circle.
Here are the steps to find the circumference of a circle:
1. Measure the radius of the circle. If you don't have the radius, you can also use the diameter, which is the distance across the circle passing through the center, and divide it by 2 to get the radius.
2. Multiply the radius by 2Ï€ (two times pi).
3. Round your answer to the desired level of precision, if necessary.
So, the formula for the circumference of a circle is:
Circumference of circle = 2Ï€ x radius
For example, if the radius of a circle is 5 cm, then its circumference would be:
Circumference of circle = 2Ï€ x 5 cm
Circumference of circle ≈ 31.42 cm
Therefore, the circumference of the circle with a radius of 5 cm is approximately 31.42 centimeters.
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