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jadi =192 : 12 = 16 cm
luas permukaan = 6 x rusuk x rusuk
= 6 x 16 x 16
= 1536 cm²(A)
192 = 12s
s = 192/12
s = 16 cm
Maka,
L.Permukaan = 6s²
= 6 . 16 . 16
= 1536 cm²
Jadi, jawabannya adalah A.