[[상수,constant#s-4]] <- curr at there

[[원,circle]]의 circumference ÷ diameter (3.14159...)

= tmp videos en =
Pi hiding in prime regularities - YouTube
https://www.youtube.com/watch?v=NaL_Cb42WyY&ab_channel=3Blue1Brown
Why do colliding blocks compute pi? - YouTube
https://www.youtube.com/watch?v=jsYwFizhncE&ab_channel=3Blue1Brown