Question

Which of the following formulae gives the relation between the circumference and thr diameter of a circle? *
1 point
c = 4πd
c = πd/2
c = πd
c = πd/4​

Answer 1

2πd or πd gives the relationship

Answer 2

Pi (Ratio of the Circumference of a Circle to Its Diameter) 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).