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Is 321.555098060 cubic inches as big as a Basketball?

It's about three-fourths as big as a Basketball
The size of a Basketball is about 433.525903650 cubic inches.
(NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball and measures about 433.525903650 cubic inches. The surface of these balls have 4,118 pebbles with a diameter of 2.5 mm each.
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