12 inch diameter(also 6 inch radius).
12 inch diameter(also 6 inch radius).
Circumference of the circle: 38*pi in miles
The diameter is about 12.1
If the circumference is 38, the diameter is 38/pi. Since the radius is half of the diameter, the radius is 19/pi.
It is customary to call a circle a 38 inch circle if its diameter is 38 inches. If that is the case, the radius = diameter/2 = 19 inches.
Circumference = pi*38 = 119.3805208 or about 119.381 inches
That depends on what is meant by 38 mi but the circumference of any circle is 2*pi*radius or diameter*pi
Circumference = 2*pi*radius or diameter*pi
pi*diameter = 38 Divide both sides by pi to find the diameter: diameter = 12.09577567 or 12 inches to the nearest inch.
38/pi = 12.09577567 or about 12 feet
Divide the circumference (38") by Pi (about 3.1416) to get the diameter in inches.
Diameter = Circumference/pi = 38/pi = 12.1 inches