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804.97 drams is about two-fifths as as a Basketball.
In other words, it's 0.41886750153 times the of a Basketball, and the of a Basketball is 2.3873897983 times that amount.
(NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball and measures about 1,921.7771659 drams. The surface of these balls have 4,118 pebbles with a diameter of 2.5 mm each.
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