Why most(may be all) constants in physics relate to pi?

I been going over all the basic constants I can think of and planck constant is the only one that come to mind with PI in it.

C and G constants have nothing to do with PI and the electron charge does not either and.........................

yeah you mean like in general relativity or heisenbergs uncertainty principle or the greatest of them all:

the volume of a pizza with radius z and height a equals pizza (home made)

I forgot Dirac constant!

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