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luas dua permukaan kubus = 2s²
2s² = 72
s² = 72 / 2
s² = 36
s = √36
s = 6 cm
volume = s³
= 6³
= 216 cm³
luas 1 permukaan kubus = 72cm : 2 = 36cm
rusuk kubus = √36cm = 6cm
volume = s³ = 6cm x 6cm x 6cm = 216cm³
maaf kalo salah