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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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How many square feet are in a basketball?
The surface area of an NBA men's official basketball is between 1.97 and 2.12 square feet.
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The Men's Size 7 regulation basketball has a diameter of 9.39 inches and radius of 4.695 inches. The surface area is calculated using the formula (pi x r2 ) where pi = 3.142 and r is the radius. Hernce, surface area = 3.142 x 4.6952 = 69.259 square inches.
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