The formula "circumference divided by diameter" yields the same result for all circles, regardless of their radius. This quantity is known as and represents the circumference of a circle divided by its diameter (Pi).
we can calculate boundary- circumference ratio. The circumference to diameter of a circle is a ratio used to define the standard definition of Pi (π). If you know the diameter 'd' of a circle, then you can easily find the circumference C using the relation: C = πd. So, when the circumference C is placed in a ratio with the diameter d, the answer we get is π.
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