Question

What are circumference calculating letters?

Answer 1

The formula that can be used for calculating the circumference of a circle is:

$C=\mathrm{\pi }\times d$ (or) $C=2\times \mathrm{\pi }\times r.$

Here, $‘C’$ denotes the circumference of the circle, $\mathrm{\pi }$ is a constant which is roughly equal to $3.14,$ $‘r’$ denotes the radius of the circle, and $‘d’$ denotes the diameter of the circle (which is equal to twice the radius).