Circumference equals the diameter times pi. The diameter is 2 times radius. Radius equals Circumference divided by pi then divided by 2.
Circumference = 2Π• radius 2Π•9 = (18×Π)"≈ 56.5"
The circumference of a circle equals the diameter times pi. The diameter is two times the radius. So a circle with a radius of 6 would have a diameter of 12, and a circumference of 12pi.
A circle with a radius of 9 inches has a circumference of 56.55 inches and a diameter of 18 inches.
radius = 17/(2*pi) = 2.705634033 or 2.706 cm to 3 d.p.
the equation to find circumference is C=2*pi*radius so when you have a radius of 18 inches, C=113.097
9. Circumference equals 2 times Pi times the radius. C=2(pi)r. "r" for radius. So if your circumference is 18 times pi, then you do 18 divided by 2, which gives you a radius of 9.
If radius equals 2.25 meters the circumference is: 14.1 meters.
If a circle's radius is 2.4 its circumference is: 15.1
Circumference equals the diameter times pi. The diameter is 2 times radius. Radius equals Circumference divided by pi then divided by 2.
The circumference of a circle if the radius is 12 equals about 75.4
2r(pi)=C where C is circumference. Therefore the radius equals C/2(pi)
The radius is 10.5
Circumference = (pi) x (diameter) Diameter = 2 x radius
The circumference = 18.8 cm
The circumference of a circle when the radius is 25 feet equals about 157.08 feet.
18/(2*pi) = a radius of about 113.09