Which formula correctly describes the proportional relationship between the circumference of a circle and the diameter?(1 point)

Question

Responses

A=πr2
upper A equals pi r squared

C=πd
upper C equals Start Fraction pi over d End Fraction

Cd=π
Start Fraction upper C over d End Fraction equals pi

π=dC
pi equals Start Fraction d over upper C

Answer 1

The correct formula that describes the proportional relationship between the circumference of a circle (C) and the diameter (d) is:

Cd = π

This means that the circumference divided by the diameter equals π. Thus, the response is:

Cd = π (or \(\frac{C}{d} = \pi\)).