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Quandaries & Queries
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 Topic: great circles
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 Two great circles 2011-10-06 From Jean:"Two great circles lying in planes that are perpendicular to each other are drawn on a wooden sphere of radius "a". Part of the sphere is then shaved off in such a way that each cross section of the remaining solid that is perpendicular to the common diameter of the two great circles is a square whose vertices lie on these circles. Find the volume of this solid." I don't understand the geometry of the problem. Can you please explain the problem and if possible draw a diagram for me ?Answered by Chris Fisher. Great circles 2007-11-05 From Lindsay:Does a sphere have only ONE great circle? Explain?Answered by Stephen La Rocque.

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