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hi,friends(6)
Posted:
Dec 15, 2007 3:37 AM


Dear friend: can you help me? what is the volume of a '3sphere_pyramid'(that is: with 3 points A,B,C on the surface of a sphere of radius R and the vertex O is the center of the sphere) with angle<OA,OB>=al(alpha),angle<OB,OC>=be(beta),angle<OC,OA>=ga(gamma)? And,how you deduce it out? As we know the spherical wedge(lune) has the volume: v=2*R^3*theta/3.



