For any given circle, the circumference is equal to the radius multiplied by 2 x pi.
If the figure is truly a circle, then the circumference is (Radius) x (2 pi) .
The circumference is ALL the way around the circle, while the radius is only HALF way into the middle of the circle. I'm guessing you meant "What is the relationship between the radius of a circle and its circumference?" Radius is half of the diameter of a circle, circumference is PI times diameter; therefore, the circumference is PI times two times radius.
Circumference = 2*pi*Radius Diameter = 2*Radius Circumference = pi*Diameter
relationship of circumference and radius
circumference of of circle / Radius of the circle
Pi and the radius can be used to find the area (PiR^2) or the circumference (2RPi) of a circle, where R is the radius.
circumference is the distance around a circle diameter is the distance from one point on the circle, straight across to the other side. radius is distance from the center of the circle to any point on the circle radius = r diameter = 2r circumference = 2(pi)r pi = 3.1415927
any circles circumference divided by its diameter will equal pi, or 3.14159 approximately
There is a constant relationship between the radius of a circle and its circumference. This is expressed in a formula.
C=2(pi)r
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Circumference = 2*pi*radius Radius = Circumference/(2*pi)