Revision 2fb6af6a-09a7-4ea7-be63-1c273d5fdbb3 - Stack Overflow

## Ruby 1.8.x, 93 ##

 r=$_.to_f
 q=0
 e=r-1
 (p(('*'*(n=1|2*(r*r-e*e)**0.5)).center r+r)
 q+=n+n
 e-=2)while-r<e
 p q/r/r

Run with `$ ruby -p piday`