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r₂ = 10 cm
t₁ dan t₂ = 12 m
Selisih Volume = V₂ - V₁
Selisih Volume = 1/3πr₂²t - 1/3πr₁²t
Selisih Volume = 1/3 x 3,14 x 10 x 10 x 12 - 1/3 x 3,14 x 8 x 8 x 12
Selisih Volume = 1256 - 803.84
Selisih Volume = 452.16