Then they are similar.
Yes.
diameter = circumference divided by pi = 62.8/3.14 = 20
A square can't have a circumference. That's only for circles squares have area, volume, or perimeter.
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!
It is an arc
An arc
The circumference of a circle = pi*diametre = 2pi*radius
The equator.
Then they are similar.
Pi times the diameter of a circle gives its circumference.
The ratio of the circumference of a circle to its diameter is Pi. (3.14159)
Any circle's circumference can be calculated with the formula 2(pi)*radius
Circumference is a special name for a circles perimeter. I think the answer you are looking for is radious.
Yes.
Yes.
Circumfrences are only for circles.