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Mathematics 109 Online
OpenStudy (anonymous):

a. The radius of earth is about 6400 kilometers. Find the circumference of a great circle. b. Write an equation for the circumference of any latitude circle with angle 649-09-06-00-00_files/i0260001.jpg. c. Which latitude circle has a circumference of about 3593 kilometers? d. What is the circumference of the equator?

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