Mathematics, 22.07.2019 23:30 jasiyous21
The greek mathematician eratosthenes (ca. 276-195 bc) measured the circumference of the earthfrom the following observations. he noticed that on a certain day the sun shone directly down a deep wellin syene (modern aswan). at the same time in alexandrea, 500 miles north (on the same meridian), therays of the sun shone at an angle of 7.2° to the zenith. use this information to find theradius and circumference of the earth.
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The greek mathematician eratosthenes (ca. 276-195 bc) measured the circumference of the earthfrom th...
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