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OG2016 PS Practice #86.
For a party, three solid cheese balls with diameters of 2 inches, 4 inches, and 6 inches, respectively, were combined to form a single cheese ball. What was the approximate diameter, in inches, of the new cheese ball? (The volume of a sphere is (4/3)?r3, where r is the radius.)
(see OG book)
(see OG book)
(see OG book)
(see OG book)
(see OG book)

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