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3. In Eratosthenes' Earth circumference experiment, if the angle that the Sun's rays strike the Earth at noon on the summer solstice varied by 7

3. In Eratosthenes' Earth circumference experiment, if the angle that the Sun's rays strike the Earth at noon on the summer solstice varied by 7 between two locations, what should the distance between the two locations have been in kilometers given a true value for Earth's circumference of 40,000 km? (Hint: There are 360 in a circle)

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