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0.90 pounds is about two-thirds as heavy as a Basketball
In other words, it's 0.654545454550 times the weight of a Basketball, and the weight of a Basketball is 1.52777777780 times that amount.
(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 1.3750 pounds. These balls have 4,118 pebbles each with a diameter of 2.5 mm
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