Tufe : Tofauti kati ya masahihisho

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Mstari 34:
*[https://www.precisionballs.com/all_wias2.php What is a Sphere? How Are Spheres Made?]
*[[planetmath:186|Sphere (PlanetMath.org website)]]
*{{MathWorld |id=Sphere |title=Sphere}}
*[http://en.wikibooks.org/wiki/Mathematica/Uniform_Spherical_Distribution Mathematica/Uniform Spherical Distribution]
*{{cite video