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V 1 : V2 = S1³ : S2³ = 8 : 27
2. 60x 72 x 30 = (PLT)²
129.000cm^6 = (PLT)²
PLT = Vol = √129.000cm^6 = 360cm²
yang rusuknya 16, maka volumenya = 16x16x16= 4096
yang rusuknya 24, maka volumenya = 24x24x24= 13824
lalu, bandingkan... maka, perbandingannya => 4096 : 13824 => 8 : 27
(jwbannya 8 : 27)