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32 = 4×s
s= 32÷4 =8
Lp = 6×s×s
=6×8×8
=384
Keliling alas kubus berbentuk persegi jadi,
K = 4 × S
32 cm = 4 × S
S = 32 cm ÷ 4
S = 8 cm
Luas permukaan = 6 × S × S
Luas permukaan = 6 × 8 cm × 8 cm
Luas permukaan = 384 cm²