Archimedes' On the Sphere and Cylinder
c. 225 BCE · Work
Archimedes proves a sphere has two-thirds the volume and surface of its enclosing cylinder — the result he asked to have carved on his tomb.
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Around 225 BCE
- Second Punic War (218 BCE)
- Qin Shi Huang unifies China (221 BCE)
- Wars of the Diadochi (322 BCE)
- Fall of the Roman Republic (133 BCE)
- Han dynasty (202 BCE)
- Maurya Empire (322 BCE)
- Punic Wars (264 BCE)
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- Reign of Ashoka the Great (268 BCE)
- Great Wall of China (Qin) (221 BCE)