Find Circumference
If you understand the relationship between the diameter of the circle and its circumference, choosing the correct formula will be easier.
The string is stretched across the circle so that it touches the center point. The length of the string is equal to the diameter of the circle.
The ratio of 3.14 diameters to 1 circumference is called pi. The symbol used to show the relationship is the Greek letter π. The relationship applies to all circles.
Learn more about finding the circumference of a circle by reading the explanation below.