Question

In a circle, what is the ratio of the circumference to its diameter?

Answer 1

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Thus c/r=C/R or equivalently c/(2r)=C/(2R): the circumference divided by the diameter is always a constant for any two circles since any two circles can be made concentric by a trivial translation. We call this magic constant π.

What is the ratio of radius to circumference?

In its simplest form, the ratio of the circumference of a circle to its radius is two to one. For every one unit of radius, there is two units in the circumference.

Answer 2

Answer:

Consider that the circumference is C=2πr and diameter is d=2r so

Cd=2πr2r=π

Step-by-step explanation:

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