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April 17, 2016
February 7, 2010
August 31, 2008
masking link, reference, and def of ball in its own article now
-63
too much jargon - it better not be deliberate
-2
arcane and esoteric - give us basic math, or stop making articles like this
+2
How is a ball different from a solid sphere, and how is this relevant?
+11
no edit summary
m+14
need source and links to more basic concepts
+16