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If the latitude of Chicago is about 42 degrees & the radius of the Earth is about...

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besure77 | Middle School Teacher | (Level 1) Senior Educator

Posted June 18, 2012 at 6:10 PM via web

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If the latitude of Chicago is about 42 degrees & the radius of the Earth is about 4000 miles, approx. how many miles is Chicago from the equator? (Use pi). 

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted June 18, 2012 at 7:03 PM (Answer #1)

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The north south position on the surface of the Earth is specified by the geographic coordinate called latitude.

The latitude of a point on the Equator is 0 and for a point on the poles the latitude is 90 degrees.

If the latitude of Chicago is 42 degrees and the radius of the Earth is 4000 miles, the distance between Chicago and the Equator is equal to D = `(2*pi*4000*42)/360` = `(2800*pi)/3` miles

Chicago is approximately `(2800*pi)/3` miles from the Equator.

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