Source: wikibot/list-of-formulae-involving-pi
= List of formulae involving π
{wiki=List_of_formulae_involving_π}
Here is a list of notable mathematical formulae and constants involving π (pi): 1. **Circumference of a Circle**: \\\[ C = 2\\pi r \\\] where \\( C \\) is the circumference and \\( r \\) is the radius of the circle.