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738 drams is about one-fourth as big as a Basketball (packed).
In other words, it's 0.245772511170 times the size of a Basketball (packed), and the size of a Basketball (packed) is 4.0688032817 times that amount.
(64% packing density) (NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball measures about 1,921.77716590 drams. These balls have 4,118 pebbles each with a diameter of 2.5 mm
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