en.wikipedia.org/wiki/Circumference

The circumference of a closed curve or circular object is the linear distance
around its edge. The circumference of a ...

www.mathplanet.com/education/pre-algebra/more-about-equation-and-inequalities/calculating-the-circumference-of-a-circle

The distance around a rectangle or a square is as you might remember called the
perimeter. The distance around a circle on the other hand is called the ...

www.mathgoodies.com/calculators/circumference-calculator.html

Our circumference calculator lets you find the circumference of a circle after you
enter its radius. For in-depth instruction on the circumference of a circle, try our ...

www.khanacademy.org/math/in-seventh-grade-math/seventh-perimeter-area/new-topic-2015-11-17T01:38:41.827Z/v/circumference-from-area

Here we find the circumference, the distance around a circle, given the area. We'
re building on our knowledge of the parts of circle.

www.eduplace.com/parents/resources/homework/pdf/geometry.pdf

Definitions: perimeter: the distance around a figure circumference: the distance
around a circle area: the number of square units in a region. ∏ (pi): the ratio of ...

www.web-formulas.com/Math_Formulas/Geometry_Perimeter_of_Circle.aspx

Perimeter is the distance around a closed figure and is typically measured in
millimetres (mm), centimetres (cm), metres (m) and kilometres (km). These units
are ...

www.aaamath.com/geo612x4.htm

The circumference of a circle is the distance around the outside of the circle. ...
The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the ...

www.coolmath.com/reference/circles-geometry

(the perimeter of a circle): circle graphic. The circumference of a circle is the
perimeter -- the distance around the outer ...

www.virtualnerd.com/tutorials/?id=PreAlg_11_01_0010

circle; find circumference; diameter; pi; multiply; pi times diameter; solve for
circumference of a ... The circumference of a circle is the distance around that
circle.

quatr.us/math/geometry/circumference.htm

The circumference of a circle is the distance all the way around the circle. It's the
same as the perimeter, but a special word that we only use for the perimeter of a
...