circumference
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Circumference is equal to 2 times pi (3.1416) times one half of the diameter (the radius). So, if the diameter is 2 cm, then the circumference would be the product of (2) times (3.1416) times (1), or 6.2832 cm. Circumference is equal to diameter times Pi. c = Pi * d diameter times pi
No; circumference divided by diameter equals pi.
Pi is basically the relationship between the circumference and diameter of a circle. (c/d). If you divide the circumference by the diameter you will always get pi, since C=Pi times d (or 2 times pi times radius), so circumference (C) divided by diameter (D) is Pi.
Because 2 times the radius is equal to the diameter of the circle
Pi times the diameter.