Circumference of a Circle formula, With radius, Definition, Example
The circumference of a circle is defined as the total distance around the edge of the circle.
The formula to calculate the circumference of a circle, given its radius (r), is:
C = 2πr
where π (pi) is a mathematical constant approximately equal to 3.14.
Examples:
Here are five examples of finding the circumference of a circle with different radii:
1. For a circle with a radius of 3 units, the circumference would be: C = 2πr = 2 * 3.14 * 3 = 18.84 units
2. For a circle with a radius of 7 units, the circumference would be: C = 2πr = 2 * 3.14 * 7 = 43.96 units
3. For a circle with a radius of 10 units, the circumference would be: C = 2πr = 2 * 3.14 * 10 = 62.80 units
4. For a circle with a radius of 2 units, the circumference would be: C = 2πr = 2 * 3.14 * 2 = 12.56 units
5. For a circle with a radius of 8 units, the circumference would be: C = 2πr = 2 * 3.14 * 8 = 50.24 units.
where π (pi) is a mathematical constant approximately equal to 3.14.