The circumference of a circle is a little more than 3 times the diameter, so for a rough, approximate conversion, multiply the diameter by 3.
For a better conversion, multiply the diameter by π instead. π is a the Greek letter whose name sounds like 'pie'. It is often written 'pi' instead of π. π cannot be written down absolutely accurately, but you can make your conversion more and more accurate by using more and more accurate values for π.
Here are some values for π in order of increasing accuracy,
3.1
3.14
3.142
3.1416
3.14159
3.141593
(This list can go on forever.)
In order to convert the area of a circle to the circumference of the circle, divide by the radius and multiply by two. The formula for the circumference of a circle is pi times the diameter.
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
Diameter = Circumference/pi
Since the circumference is Pi times the diameter then divide the circumference by Pi (3.14159) to get the diameter
Circumference = diameter(pi) so divide the circumference by pi to get the diameter.
You divide the circumference by pi or 3.14.
To Find Diameter:Multiply circumference by 0.3183, ordivide circumference by 3.1416Other things to do with circles:To find Circumference:Multiply diameter by 3.1416, ordivide diameter by 0.3183To Find Radius:Divide diameter by 2, ormultiply circumference by 0.15915, ordivide circumference by 6.28318
Divide the circumference by Pi (3.1416)
Circumference is Pi x Diameter so do Circumference divided by Pi to get the diameter :)
In order to convert the area of a circle to the circumference of the circle, divide by the radius and multiply by two. The formula for the circumference of a circle is pi times the diameter.
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
Diameter = Circumference/pi
diameter = circumference/pi
Since the circumference is Pi times the diameter then divide the circumference by Pi (3.14159) to get the diameter
The circumference of a 13.5 diameter circle is: 42.41(diameter x pi = circumference).
Oh, dude, it's like you're asking me to do math or something. So, the formula for finding the diameter of a circle is just dividing the circumference by pi (π). So, in this case, the diameter would be 8 divided by π, which is approximately 2.55. But hey, who's really counting, right?
Circumference = diameter(pi) so divide the circumference by pi to get the diameter.