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Lkubus = 23cm X 23cm
= 529 cm²
LPermukaan Kubus = 529cm X 6
= 3.174 cm²
rusuk = 19 cm
LK = 19cm X 19cm
= 361 cm²
LPkubus = 6 X 361cm²
= 2.166cm²
terima kasih, semoga membantu ^^
jawaban yang bawah = 6 x s^2 = 6 x 19 ^2 = 6 x 361 = 2166 cm2