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nadezda [96]
2 years ago
6

How did eratosthenes measure the size of the earth.

Geography
1 answer:
Luden [163]2 years ago
5 0

Answer:

Eratosthenes then measured the angle of a shadow cast by a stick at noon on the summer solstice in Alexandria, and found it made an angle of about 7.2 degrees, or about 1/50 of a complete circle. ... Eratosthenes then used this to calculate the circumference of the Earth to be about 250,000 stadia

:)

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