a perimeter is a length of outline of any shape ( but only for circle we call the perimeter as circumference ) .
Its called a perimeter, cause a perimeter is the outside, so it must be a perimeter! :)
perimeter
perimeter To convince yourself search perimeter in Wikipedia.org, "The World's Encyclopedia" http://en.wikipedia.org/wiki/Perimeter
The perimeter.
The boundary of an area is its perimeter.
Perimeter
The perimeter of a circle is called the circumference and the formular of finding it is Pi D or 2Pi R
The word perimeter means the distance around the outside of an object. The perimeter of a circle has a special name. We call it the circumference. The perimeter of this circle, or circumference, is 25 ft.
The perimeter of a circle is called the circumference
It is called the perimeter.
Perimeter is the distance around something. In the case of a circle (or other curved figures), this is simply called the perimeter, so I would say perimeter is the same as circumference. Except that it is uncommon to call the circumference of a circle the "perimeter".