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circumference = 2pi * r = 2(3.1416) * 5 cm = 31.4159 cm i hope that helps
Radius = 5/(2*pi) = 0.7958 cm rounded to 4 decimal places
If the circumference of a circle is 12 cm the radius is: 1.91 cm
A circle with a radius of 0.5 cm has a circumference of 3.14 cm.
A circle with a radius of 7.7 cm has a circumference of 48.38 cm