600 km radius implies 2*3.1416*600km=3770 km
have you driven 3770 km
and i dont find intelligent obtaining earth radius based on measuring 800 km distance
are you suggesting is true he paid a gold coin to a kid to walk that distance counting steps
that the system agrees this guy was bright doesnt make it to me eyes
in fact i find the method stupid compared to the arab method, more taking into account he had the tower of alexandria avalable
hey i did this and now its on first hits
