Yes. you need to know the diameter or radius of the circle and then the formula is:-
Circumference = Pi*Diameter
or Circumference = 2Pi*Radius.
An approximate value for Pi is 3.14159.
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Circumference is found of a circle is found by multiplying pi times the diameter (or the radius 2 times).
Arctic Circle.
There are infinite lines of symmetry within a circle
The line that goes around, or envelopes, a circle is the circumference of the circle. It is found by multiplying the diameter of the circle, which is a line that crosses the center, by pi.
A chord is when two points in a circle are connected by segment. A diameter is a chord, but not a radius. The radius is not a complete segment in the circle