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Assume that the length of Earth's equator is exactly 25,100 miles and that the Earth is a perfect sphere. The town of Lena, Wisconsin, is at \(45^{\circ}\) North Latitude, exactly halfway between the equator and the North Pole. What is the number of miles in the circumference of the circle on Earth parallel to the equator and through Lena, Wisconsin? Express your answer to the nearest hundred miles. 

 Dec 25, 2018
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This number of miles is given by :

 

25100 *  (45 /360)  =  3137.5 milies  ≈   3200 miles  (rounded to the nearest 100 miles)

 

 

cool cool cool

 Dec 25, 2018

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