Circumference of a circle = π x DC = 3.14159 x 38C = 119.38 inches
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.
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.
Circumference = 2*38*pi feet
if the diameter is in feet then multiply the diameter by pi 38 x 3.14159 = 119.38042 square feet if the diameter is in inches then dividethe inches by 12 then multiply the diameter by pi 38 ÷ 12 = 3.16666 x by 3.14159 = 9.94835 square feet
Circumference of the circle: 38*pi in miles
The diameter is about 12.1
The circumference of an 8-foot circle is: 25.13 feet.
If the circumference is 38, the diameter is 38/pi. Since the radius is half of the diameter, the radius is 19/pi.
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
Divide the circumference (38") by Pi (about 3.1416) to get the diameter in inches.
12 inch diameter(also 6 inch radius).
12 inch diameter(also 6 inch radius).
Diameter = Circumference/pi = 38/pi = 12.1 inches
If the 19' is referring to the circumference of a circle then the diameter is approx. 6.0479'. 19÷3.1416=approx. 6.0479 If the 19' is referring to the radius, (from center of the circle to the outside edge), then the answer is 38'. diameter= radius X 2. 19X2=38
The circumference C is equal to [2 x pi x radius] or [pi x diameter]In the example, the circumference is 12 pi = 12 x 3.1416 = about 38 feet (37.70 feet)