How do you figure out diameter and circumference?
Circumference is pi times diameter. Diameter is circumference divided by pi. Diameter is twice the radius. Radius is half the diameter.
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To get a circle's circumference, multiply its diameter by Ï (pi), which is approximately 3.1416.
Divide by Pi.
You multiply the diameter by Pi (about 3.1416). The result is the circumference: . 8m x 3.1416 = 25.1328 meters circumference
Divide the circumference by pi, and that will give you the diameter.
pi(3.14) divided circumference
Diameter is distance across a circle or sphere, circumference is the distance around a circle or sphere
about the same as the length of the volume
Multiply the diameter by pi (approximately 3.1416) to find the circumference.
The answers depend on what you want to "do" and what informationyou have.
The value of Pi is always 3.14179.... (22/7)
Pi times the diameter.
The formula for the circumference (C) of a circle is C = 2Ïr or C = ÏD, where r is the radius and D is the diameter. If you know the circumference then C/Ï = D… So just divide the circumference by pi to get the diameter.
Circumference equals pi times the diameter, so you would divide by pi. (3.14159265...)
Using the formula C=d Ï. You can leave pi in the formula and have 11 Ï or approximate the answer and get about 34.54.
The circumference = pi x r 2 , and the diameter = 2r. So if you start with the circumference, you divide that number by pi (3.1416), then take the square root. What's left …is the value of the circle's radius; double it to get the diameter.
You just multiply the diameter by Pi.