Question

So what's the circumstances of a circle?​

Answer 1

`2\pi \: r`

Explanation:

Basically the perimeter of a circle. The way to find it would be

`2 * \pi * r`

Answer 2

The circumference of a circle is the perimeter of the circle. It is the total length of the boundary of the circle. The circumference of a circle is the product of the constant π and the diameter of the circle. ... The circumference is a linear value and its units are the same as the units of length. C=2πr