The circumference is the measurement around a circle
The letter or character used to represent the ratio of the circumference to the diameter of a circle is the Greek lower case letter π, called "pi."
It is a Greek letter used to represent the ratio of the diameter of a circle to its circumference so you can see 'pi' (not a pi)in any circle.
It is: circumference/diameter = pi
pi
Because the ratio of the circumference of any circle to its diameter is pi.
Ark is part of the circle's circumference.
The most commonly used measure of a circle is its radius, which is the distance from the center of the circle to any point on its circumference. The radius is generally represented by the letter "r". Other measures of a circle include its diameter (the distance across the circle passing through its center) and its circumference (the distance around the circle).
Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle
The circumference of a circle is the perimeter of the circle for a given diamater.
circumference
The perimeter of a circle is its circumference