Eratosthenes of Cyrene measured a solar shadow at about 7.2o from the perpendicular in a well at Alexandria, Egypt, but no solar shadow (0o from the perpendicular) in a well at Syene, Egypt, 490 miles to the south, at midday on the summer solstice. From these measurements, he was able to calculate: that the circumference of the Earth is about 73,500 miles that the circumference of the Earth is about 61,250 miles that the circumference of the Earth is about 49,000 miles that the circumference of the Earth is about 36,750 miles E. that the circumference of the Earth is about 24,500 miles

Basic Clinical Laboratory Techniques 6E
6th Edition
ISBN:9781133893943
Author:ESTRIDGE
Publisher:ESTRIDGE
Chapter1: The Clinical Laboratory
Section1.7: The Metric System
Problem 5RQ
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Eratosthenes of Cyrene measured a solar shadow at about 7.2o from the perpendicular in a well at Alexandria, Egypt, but no solar shadow (0o from the perpendicular) in a well at Syene, Egypt, 490 miles to the south, at midday on the summer solstice. From these measurements, he was able to calculate:

  1. that the circumference of the Earth is about 73,500 miles
  2. that the circumference of the Earth is about 61,250 miles
  3. that the circumference of the Earth is about 49,000 miles
  4. that the circumference of the Earth is about 36,750 miles
  5. E. that the circumference of the Earth is about 24,500 miles 
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