This is a request for help, not an attempt to challenge anything.
Since $\pi$ is irrational, this tells me that it's impossible to express the distance around a circle in terms of the distance accross.
That boggles my mind, but maybe it should not.
I think crazy thoughts like: "this means that a the path of a circle around a unit lenth line segment has a non existant length".
Is there a way to accept that the number is irrational and not break from reason?