The circumference of a circle = pi*diametre = 2pi*radius
Pi times the diameter of a circle gives its circumference.
Circumfrences are only for circles.
Circumference of any circle = 2*pi*radius or pi*diameter
to calculate circumference you find a circles radius or diameter. you do diameter times pi or radius times 2 times pi. the you have circumference!
circumference is only in a circle. Circumference only applies to circles, ellipses, or other round objects. If you want to find the "perimeter," add up all three sides.
Divide by pi and then divide by 2
circumference = 2*pi*radius or pi*diameter
It is an arc
An arc
Area=pi times radius squared Circumference=pi times diameter or pi times radius times two
The equator.
You need to know diameter of each circle, which are different for each circle; each circle circumference is pi x diameter where pi = 3.14159