Question

Defination of circumference of a circle

Answer 1

Answer:

C=2πr

Step-by-step explanation:

Circumference to diameter. You probably noticed that since diameter is twice the radius, the proportion between circumference and diameter is equal to π: C/D = 2πR / 2R = π This proportion (circumference to diameter) is the definition of the constant pi. It is used in many areas, including physics and mathematics.

Answer 2

$\textbf{Circumference}$:

Circumference of a circle refers to the perimeter of a circle.

Circumference = 2πr

Where, r = radius of circle.