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## Cylinder and Spehre
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algebraic3d
solid cyl = cylinder ( 3, 0, 0; -3, 0, 0; 0.5 )
	and plane (-2, 0, 0; -1, 0, 0)
	and plane (2, 0, 0; 1, 0, 0);
solid sp = sphere (0, 0, 0; 1);

solid main = sp or cyl;

tlo main;