It is: pi*diameter
Chat with our AI personalities
Given a circle with a diameter of 4, the circumference is: 12.6 (diameter x Pi = circumference).
Diameter = circumference divided by pi. (3.14159)
Circumference = diameter*pi
Divide the circumference by pi (3.141592......) to get the diameter.
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)