Pi, or 3.14159
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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)
The ratio of the circumference to the radius of the circle is 2 times pi
C = pi x D is the ratio of a circle's circumference to its diameter.
Pi is the ratio of a circle's circumference to its diamter. It equals approximately 3.14159 Pi = circumference/diameter