The circumference of a circle with a diameter of 1 cm would be 0.31. This is used a lot in math.
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circumference = diameter * pi. Therefore, diameter = circumference ÷ pi.
The relationship of a circles circumference to it's diameter is Pi x diameter. So a 1cm diameter circle will have a circumference of 3.142 cm to the third d.p.
The circumference of a circle with a diameter of 7.2 is 22.62. (rounded)
What is the diameter if the circumference is 2 inches? C = pi times d Diameter d = C / pi = 2 iches / 3.14156 = 0.63662 inches
Circumference is Pi x Diameter so do Circumference divided by Pi to get the diameter :)