Divide the circumference (38") by Pi (about 3.1416) to get the diameter in inches.
If the circumference is 38, the diameter is 38/pi. Since the radius is half of the diameter, the radius is 19/pi.
The circumference c of any circle with diameter d is d X (pi). In this instance, 12 inches (3.14) = 38 inches, to the justified number of significant digits.
The circumference C = 2 r times pi C = 76 inches times pi. pi = 3.141592654...
The circumference of an 8-foot circle is: 25.13 feet.
Oh, dude, you're hitting me with some math now? Alright, so the circumference of a circle is just π times the diameter, which in this case would be 38π inches. You could calculate the exact number, but like, who has time for that? Just know it's around 119.38 inches, give or take a decimal or two.
Divide the circumference (38") by Pi (about 3.1416) to get the diameter in inches.
Diameter = Circumference/pi = 38/pi = 12.1 inches
Circumference of the circle: 38*pi in miles
The diameter is about 12.1
Circumference of a circle = π x DC = 3.14159 x 38C = 119.38 inches
If the circumference is 38, the diameter is 38/pi. Since the radius is half of the diameter, the radius is 19/pi.
The circumference c of any circle with diameter d is d X (pi). In this instance, 12 inches (3.14) = 38 inches, to the justified number of significant digits.
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.
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
38/pi = 12.09577567 or about 12 feet