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submitted 1 week ago by ywellow@fedia.io to c/videos@lemmy.world
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[-] disguy_ovahea@lemmy.world 12 points 1 week ago

Eratosthenes did it for the cost of paying a man to count his steps from one city to another.

He was accurate within 1% of the Earth’s circumference.

https://en.wikipedia.org/wiki/Eratosthenes

this post was submitted on 04 Sep 2024
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