Circumference = pi*diameter or 2*pi*radius
EDIT: To find the diameter, using the circumference - you divide the circumference by the value of Pi - Snakester1962 (Supervisor)
Divide the circumference by 3.14159265 (3.14 for rough approximation) to find the diameter of a circle.
The value of pi = circumference/diameter
diameter X pi = circumference What you call edge is usually called circumference. pi = 3.1416
Circumference = pi*diameter or 2*pi*radius
EDIT: To find the diameter, using the circumference - you divide the circumference by the value of Pi - Snakester1962 (Supervisor)
16.55cm - If you want to work it out, you will need to divide the circumference by pi.
Circumference of a parallelogram = (2 x length) + (2 x width).
c=2*pie*r c= circumference r= radius.
Divide the circumference by 3.14159265 (3.14 for rough approximation) to find the diameter of a circle.
It is the ratio of the circumference (C) and the diameter (D) of a circle. Using pi and the diameter of a circle, you can work out the circumference.
circumference = pi*100mm
The answer will depend on what information you have: radius, area, diameter.
The value of pi = circumference/diameter
Divide the cirumference by 3.14
Circumference = 2*pi*radius In this case radius = 5 units so circumference = 31.4159 units approx.