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

Question

Responses

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

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

A=πr2
upper A equals pi r squared

π=dC
pi equals Start Fraction d over upper C

Answer 1

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

C = πd

This formula indicates that the circumference is equal to pi times the diameter.