C = pi x D is the ratio of a circle's circumference to its diameter.
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The ratio of the circumference of a circle to its diameter is Pi. (3.14159)
The ratio of the circumference of a circle to its diameter is Pi. (3.14159)
ratio of circumference to diameter of a circle is 3.14159265:1
Because the ratio of the circumference of any circle to its diameter is pi.
The circumference of any circle is: diameter times pi The circumference of any circle divided by its diameter is the value of pi