A circle with a radius of 9 inches has a circumference of 56.55 inches.
A circle with a radius of 9 inches has a circumference of 56.55 inches and a diameter of 18 inches.
The circumference of 9 inch diameter circle is about 28.27 inches.
Circumference of circle in inches: 108*pi = 399 inches to the nearest whole number
C = ~56.55 inches.
(9 pi) inches is.
27 circumfrencee
r2*pie=circumference 9(9)*pie 81*pie 254
Apart from the fact that there is no such thing as a raduis, the radius of 9 km depends on what the 9 km measures: the diameter, the circumference or something else.
C = 2*pi*r Plug in.
Circumference of 9 inches: 2.864788975654119in. (for pi I used 3.14159265358979) Diameter of 9 inches: 4.5in.
The circumference of a 9 circle is: 28.3