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QUESTION
drawing on Eratosthenes' method, if two are due north and south of each other and are seperated by 400km, what is the circumference of their
drawing on Eratosthenes' method, if two are due north and south of each other and are seperated by 400km, what is the circumference of their spherical world if they see the same star on their meridian at altitudes of 23 degrees and 47 degress respectively, and at the exact same time
