The diameter of a circle with a circumference of 18 is: 5.73
The circumference of a circle with a diameter of 18 yards is: 56.55 yards (diameter x Pi = circumference).
The circumference of a circle with a diameter of 18 inches is 56.5 inches.
An 18" diameter circle has a circumference of about 56.5 inches.
56.548667764616276 circumference = PI * diameter
The diameter is about 18.
Circumference = pi*diameter So C = pi*18 = 56.5 units (approx).
It has a circumference of 56.5 units.
If the diameter is 18, then the circumference is d*pi or 18pi. 18pi=56.52 if you use 3.14 as pi.
Diameter = 18/pi = 5.73 feet, approx.
The formula for circumference is pi*d = circumference. Therefore just divide the circumference by pi to get diameter. Approx. answer = 5.73
If the diameter of a circle is 18 centimeters the circumference will be about 56.55 cm (d x Pi = C)