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. :)
to find the diameter of a circle when you only have the circomference you: divide the circomference by pi (approx. 3.14)
If you only have a given diameter you have to multiply the diameter by Pi (3.142) or 3.14 and then you get the circumference!
circumference = pi x diameter; diameter = circumference/pi = 8/pipi is approximately 3.14You do the math if you want an approximation(There is no rational answer to this question, only approximations.)
If you know the radius, then Diameter = 2 x (radius) Circumference = (pi) x (diameter) or Circumference = 2 x (pi) x (radius)
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. :)
Circumference = pi*d. So d = Circumference/pi
Circumference of a circle: pi times diameter
to find the diameter of a circle when you only have the circomference you: divide the circomference by pi (approx. 3.14)
The equation for finding the circumference of a circle is diameter times pi so reverse it to circumference divided by pi which leaves the diameter. The diameter is twice as big as the radius so divide the diameter by 2 and you will find the radius.
If you have only the diameter to get the circumference you have to multiply the circumference by pi: 3.14
To find the circumference of a circle, you need only know the radius or diameter of the circle. The circumference of a circle is calculated as 2 x Pi x radius OR Pi x diameter. Pi is approximately 3.1415926.
If you only have a given diameter you have to multiply the diameter by Pi (3.142) or 3.14 and then you get the circumference!
The diameter is the circumference divided by pi.
Circumference of a circle = (pi) x (diameter)
circumference = pi*diameter
Divide the circumference by Pi.