Circumference of a circle is 2πr (two x Pi x the radius of the circle)
Pi is usually taken as 3.14 for simple calculations - see here http://en.wikipedia.org/wiki/Pi for a longer determination of Pi.
The radius is half the diameter.
Thus, a circle with a diameter of 6cm has a circumference of 18.84cm
The circumference of a circle with a diameter of 6cm is about 18.85cm
The circumference of a circle = 2*pi*radius or diameter*pi
If the diameter of a circle is 9 the circumference is: 28.3
If a circle has a diameter of 5 the circumference is: 31.4
If a circle has a diameter of 2.25, the circumference is: 7.069
The circumference of a circle with a diameter of 6cm is about 18.85cm
The circumference of a circle = 2*pi*radius or diameter*pi
It is: 2 to 3 respectively
Diameter of a circle = circumference/pi
Diameter of a circle = circumference/pi
The circumference of a 13.5 diameter circle is: 42.41(diameter x pi = circumference).
A ≈ 28.27cm2
A circle with a circumference of 11.25 has a diameter of: 3.581
The circumference of a circle with a diameter of 25 is: 78.54
If the diameter of a circle is 9 the circumference is: 28.3
If a circle has a diameter of 14, the circumference is: 43.98.
If a circle has a diameter of 2.25, the circumference is: 7.069