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maka ===> 38.808 = (4/3)(22/7)r³
38.808 = 4 4/21 r³
r³ = 38.808 / (4 4/21)
r³ = 9,261
r = ∛9,261 = 2,1
rumus permukaan bola adalah 4r² sehingga 4 (22/7) * (2,1)²
(12 4/7) * 4,41 = 55,44
Jadi, luas permukaan sisi bola adalah 55,44 cm²