Divide the known circumference by pi to find the diameter of the circle.
If the diameter of a circle is 69mm then the circumference is: 216.8mm (diameter x pi = circumference).
If you know the diameter and need the circumference you times the diameter of the circle by 3.14 also known as pie. That is how you get the circumference by only knowing the diameter. :)
The Circumference is approximately 143.60. Circumference = 3.14159265 (known as Pi) x Diameter. Cheers!
To find the area of a circle, either the diameter or the circumference must be known. The formula for the area from the diameter is (pi)*(1/2 of diameter) squared. From the circumference, simply substitute (circumference / pi) for diameter.
Diameter of a circle = circumference/pi
Diameter of a circle = circumference/pi
The number pi can be defined as: pi = circumference / diameter. Solving for diameter: diameter = circumference / pi. Pi is approximately 3.14.
The circumference of a 13.5 diameter circle is: 42.41(diameter x pi = circumference).
If a circle has a circumference of 8 the diameter is: about 2.546 (circumference divided by pi = diameter).
The length around a circle is the circumference The length across a circle is the diameter
The circumference of a circle if the diameter is 12cm is 37.7cm