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The material needed to make the skin of a basketball costs $71.62 / m2. A standard basketball has a diameter of 24 cm. To the nearest dollar, how much does a basketball cost to make?

 Jul 16, 2020
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The material needed to make the skin of a basketball costs $71.62 / m2. A standard basketball has a diameter of 24 cm. To the nearest dollar, how much does a basketball cost to make?     

 

Areasphere  =  4 π r2     

                   =  (4) (3.1416) (122)     

                   =  1809.56 cm2     

 

(1809.56 cm2) (0.0001 m2 / cm2)  =  0.18 m2     

 

(71.62 dollars / m2) (0.18 m2)  =  12.89 dollars  rounds to  $13     

.     

 Jan 26, 2026

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