Circumference of a circle is 2 x Pi x the radius
If the figure is truly a circle, then the circumference is (Radius) x (2 pi) .
area = pi*r2 where pi is the irrational number approximated by 3.14159
The area of a circle is defined by the equation A = πr^2 where π = pi (3.14...) A = Area r^2 = radius squared So, the radius of a circle squared multiplied by pi equals the area.
The area of a circle is pi times the square of the radius. Pi has no relationship with the area of a polygon.
In relation to the area of a circle: pi*radius^2
Circumference = 2*pi*Radius Diameter = 2*Radius Circumference = pi*Diameter
Circumference of a circle is 2 x Pi x the radius
If the figure is truly a circle, then the circumference is (Radius) x (2 pi) .
area = pi*r2 where pi is the irrational number approximated by 3.14159
C=2(pi)r
The area of a circle is defined by the equation A = πr^2 where π = pi (3.14...) A = Area r^2 = radius squared So, the radius of a circle squared multiplied by pi equals the area.
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.
The area of a circle is pi times the square of the radius. Pi has no relationship with the area of a polygon.
-- Volume of a sphere = 4/3 x (pi) x (radius)3 -- Volume of a cylinder = (pi) x (radius)2 x (length) The only relationship I can see is that they both involve (pi).
circumference of of circle / Radius of the circle
any circles circumference divided by its diameter will equal pi, or 3.14159 approximately