π is [defined as] the ratio of the circumference of any circle to its diameter.
This ratio is constant regardless of the size of the circle.
Therefore the circumference has to equal π times the diameter.
why is 2 plus 2 four? It's just a fact.
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Nearly, I think you committed a typo: pi = circumference/diameter
The formula for the circumference of a tree is Diameter * PI. If the circumference is known, then the diameter is equal to the circumference / PI. In this case, the diameter is equal to 5 foot 5.29 inches.
The circumference of a circle divided by its diameter is equal to the value of pi.
the circumference
If you mean a circle, the circumference is equal to the diameter multiplied by pi.