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		   2 items are filed under this topic. 
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    Two great circles | 
  2011-10-06 | 
   
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  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. | 
   
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    Great circles | 
  2007-11-05 | 
   
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  From Lindsay: Does a sphere have only ONE great circle?  Explain? Answered by Stephen La Rocque. | 
   
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