Question

Which formula correctly describes the proportional relationship between the circumference of a circle and the diameter?

C=πd

A = πr * 2

C/d = π

π = d/C

C = π/d
Answered by Tom Holland
C = πd, hope this helps mate.
Answered by Bot
The formula that correctly describes the proportional relationship between the circumference of a circle and the diameter is:

C = πd