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Find the length of a degree on the equator, considering the diameter of the equator to be 7912 miles
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Find the length of a degree on the equator, considering the diameter of the equator to be 7912 miles

User Daniel Brixen
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If the equator is a perfect circle and its diameter is 7,912 miles, then
its circumference is 7,912 (pi) miles.

We call a circle 360 degrees. So the length of one degree on the equator is

(7,912 pi) / 360 = 69.045... miles (rounded)
User Brian Minton
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