![The tombstone of Ludolph van Ceulen in Leiden, the Netherlands, is engraved with his amazing 35-digit approximation to pi; he calculated after 25 years of efforts to compute the perimeter of a The tombstone of Ludolph van Ceulen in Leiden, the Netherlands, is engraved with his amazing 35-digit approximation to pi; he calculated after 25 years of efforts to compute the perimeter of a](https://preview.redd.it/yezx72pb0gl71.png?auto=webp&s=0ff1c8a4a1ac19470e25995bd501aa8de2733dbf)
The tombstone of Ludolph van Ceulen in Leiden, the Netherlands, is engraved with his amazing 35-digit approximation to pi; he calculated after 25 years of efforts to compute the perimeter of a
Calculus Tutor - Ludolph van Ceulen, using Archimedes' methods, approximated the circle with a regular polygon which had 2⁶² sides. It took 25 years of hand calculations to produce a 35 digit
![Bestand:Titelblad Ludolf van Ceulen, Vanden circkel (Delft 1596), met portret van Ludolf van Ceulen op 56-jarige leeftijd, RP-P-1906-876.jpg - Wikipedia Bestand:Titelblad Ludolf van Ceulen, Vanden circkel (Delft 1596), met portret van Ludolf van Ceulen op 56-jarige leeftijd, RP-P-1906-876.jpg - Wikipedia](https://upload.wikimedia.org/wikipedia/commons/f/ff/Titelblad_Ludolf_van_Ceulen%2C_Vanden_circkel_%28Delft_1596%29%2C_met_portret_van_Ludolf_van_Ceulen_op_56-jarige_leeftijd%2C_RP-P-1906-876.jpg)