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Lp = 6 x 20 x 20
Lp = 6 x 400
Lp = 2400 cm²
Jadi, luas triplek yang dibutuhkan adalah 2400 cm²
Jawab : s^2 = 20^2 = 20 x 20 = 400
400 x 6 = 2400 cm
6 = sisi kubus