Question 1026623
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Find the area and volume of a lune whose angle is 45 degrees drawn on a sphere whose diameter is 10 cm.
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1.  To learn what is a lune on a sphere, look into this web-page <A HREF=http://mathworld.wolfram.com/SphericalLune.html>http://mathworld.wolfram.com/SphericalLune.html</A>.


2.  The surface area of a given lune is  {{{1/8}}} of the sphere surface.

3.  The volume of a given lune is  {{{1/8}}} of the sphere volume.
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