In order to try reproduce an ancient method of finding the size of the earth, th

Question

In order to try reproduce an ancient method of finding the size of the earth, the following are actual measurement taken concurrently: At "high noon" ( the time at which the sun is at its maximum height in the sky) in Greeley, Colorado, a light post that is 17 feet 10 inches high was found to have a shadow that measured 8 feet 2 inches long. At the same time in Roswell, new Mexico, 486 miles directly south, a meter stick cast 31 centimeter shadow ( a level was used to make sure that the meter stick was directly vertical). if we used just this information, what would be our best estimate for the circumference of the earth?

Explanation / Answer

6.28*6km = 37.68 km

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