Radius is half the circumference
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
Circumference=2 x pi x radius that is circumference=2 pi x r
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There is a constant relationship between the radius of a circle and its circumference. This is expressed in a formula.
any circles circumference divided by its diameter will equal pi, or 3.14159 approximately
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.
i am not sure but i could surly use some help
For any given circle, the circumference is equal to the radius multiplied by 2 x pi.
circumference of of circle / Radius of the circle