circumference = pi*100mm
15.92mm
The circumference of a circle with a diameter of 31.8mm is about 100mm (99.990265mm)
Circumference equals Diameter times Pi, OR Diameter equals (Circumference)/(Pi). In this case, Diameter equals (130mm)/(Pi or 3.14159) equals 41.38mm
39 inches / pi = 12.4 inches
Radius is half of the diameter, so you can easily come up with a formula: L = 0.25 * pi * d2
circumference/pi = diameter
15.92mm
The volume in liters of a 100mm long by 50mm diameter cylinder is: 0.196 liters.
The volume in liters of a cylinder with a diameter of 2000mm and a depth of 100mm is: 314 liters.
If the diameter is known, don't bother measuring the circumference.Simply multiply the diameter by 'pi'.
circumference = pi*diameter so diameter = circumference/pi = 19.1 metres.
Either pi times the diameter or pi times twice the radius (which is the diameter)
Circumference = (pi) x (diameter) = 14 pi = 43.9823 inches (rounded)
What is 27 X 3.14? 27 pi
The circumference of a circle with a diameter of 31.8mm is about 100mm (99.990265mm)
Diameter of circle: 13/pi = 4.138 ft to 3 decimal places
100mm diameter.