Question

What is the ratio of radius to the circumference of circle?​

Answer 1

Step-by-step explanation:

Circles are all similar, and "the circumference divided by the diameter" produces the same value regardless of their radius. This value is the ratio of the circumference of a circle to its diameter and is called π (Pi).

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Answer 2

Answer:

1:2pi

Step-by-step explanation:

radius=r

circumference=2pir

radius:circumference=r:2pir

Therefore, radius:circumference=1:2pi