Which formula is used to find the circumference of a circle when the radius is given?(1 point)

Question

Responses

C=2r
upper C equals 2 r

C=2d
upper C equals 2 d

C=r
upper C equals r

C=r2

Answer 1

The correct formula is "C=2πr" where "C" represents the circumference of the circle and "r" represents the radius.