Basketball History

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According to the Spalding website, (http://www.spalding.com/contact/contact.html#Q6), there are 122 dots per square inch on a Spalding basketball which makes approximately 35,000 dots total. Some basketballs have different designs, though, and will have a different number of total dots. but the dots are grips so the ball wont slip out of your hand

I can't tell you exactly, but I can tell you how to estimate the number of dots on a basketball. First, measure a 1 inch square on the surface of the basketball and count the dots it contains. Then use the formula for the area of a sphere, which is: 4PR2, or 4 times Pi times the radius squared. An official men's pro basketball is 9 inches in diameter, so the radius would be 4.5 inches and the formula would work out like this: 4 times 3.14 times 20.25 equals 254.34 square inches. Measure any areas on the basketball that have no dots and subtract that area from the total square inches arrived at above. Now multiply this number by the number of dots you counted and you've got a decent approximation.

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