The circumference of a circle can be found by multiplying its diameter (the distance from one point on the circle to its opposite point) by the irrational number pi.
The value of pi is about 3.14, but it has an infinite number of nonrepeating digits. The circumference can also be expressed as 2(pi)r, where r is the radius. The radius is the distance from the center of the circle to any point on the circle. It is equal to half of the radius.
18.84
The circumference of a circle is (diameter) multiplied by (pi).
pi times diameter
25.1
Pi times radius squared.
divide
Circumfrence
the circumfrence of a circle is pi times it's radius squared.
Circumfrence
18.84
The circumference of a circle is (diameter) multiplied by (pi).
pi times diameter
25.1
Pi times radius squared.
22*pi
Circumfrence is the perimeter of a circle, the line that makes a circle looks like a circle Imagine a perfect circle drawn on a piece of paper. Take the length of the line of the circle (by line I mean the part that is actually drawn on the piece of paper the ring) and there, you have the circumfrence. The circumfrence is exactly π times the size of the diameter (if you don't know what those two things are ignore this)
The circumfrence; Pi (or 3.14) times the width across the circle :)