Question

circumference of circle​

Answer 1

☆Required☆

Circumference of circle is Perimeter of circle. Means to find length of outline of circle.

Circumference formula=$\sf \: 2\pi r$

Hope it helps you....

Answer 2

Answer:

Circumference (C in black) of a circle with diameter (D in cyan), radius (R in red), and centre (O in magenta). Circumference = π × diameter = 2π × radius.

Step-by-step explanation:

the formula for circumference of a circle is 2 x pi x r(radius).