If a circle has a circumference of 18pi, the radius is 9.
Doubling the radius doubles the circumference.
A circle with a radius of 4.5 cm has a circumference of 28.27 cm
18 pi
r2*pie=circumference 9(9)*pie 81*pie 254
A circle with a radius of 9 inches has a circumference of 56.55 inches.
If a circle has a circumference of 18pi, the radius is 9.
Doubling the radius doubles the circumference.
The radius is 1.43
Circumference = 2Π• radius 2Π•9 = (18×Π)"≈ 56.5"
A circle with a radius of 9 inches has a circumference of 56.55 inches and a diameter of 18 inches.
The radius is about 1.432 units.
circumference = 2*pi*9
56.549
If radius of a circle is 9 centimeters the circumference would be: 56.55 cm (r x 2 x Pi = circumference).
The circumference is about 56.55 yards.
A circle with a radius (d/2) of 9 meters has a circumference of 56.5 meters.