
SİNCAN BİLSEM is calculating the circumference of earth with eratosthenes method
POLYMATH



first of all we prepared the materials;
... 1 meter long stick
....ruler
....miter
....pen
...paper




we use the link below to find the right time in our city Ankara. The time must be at 12:45.




the distance from ankara/turkey to equator is nearly 4.441,56












as a result we found the circumference of the earth nearly 40.099.
ıts very funny to calculate circurference of the earth with eratosthenes method.
thanks a lot POLYMATH project teams....
