The Greek mathematician Eratosthenes (ca. 276-195 B.C.) shone to the zenith. directly down a deep well in Syene (modern Aswan). At the same time in Alexandria, 500 miles north (on the same meridian), the 500 mi Alexandria, $7.2⁰ Syene Rays of sun Use this information and the figure to find the radius of the earth. (Round your answer to the nearest ten miles.) mi Use this information and the figure to find the circumference of the earth. mi 25.000

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