The formula for the circumference of a circle is:
Circumference=2πr\text{Circumference}=2\pi rCircumference=2πr
where:
- rrr is the radius of the circle,
- π\pi π (pi) is approximately 3.14159.
Alternatively, if you know the diameter ddd (which is twice the radius), the formula is:
Circumference=πd\text{Circumference}=\pi dCircumference=πd
Let me know if you'd like an explanation or examples!
