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V = 1.728 cm³
Maka,
V = s³
1.728 = s³
s = ∛1.728
s = 12 cm
Sehingga,
L = 6 x s²
L = 6 x 12²
L = 6 x 144
L = 864 cm²
Jadi, Luas permukaannya adalah 864 cm²