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Verified answer
Vbalok = VkubusV kubus = S x S x S = 12 x 12 x 12 = 1728
V balok = 1728
1728 = p x l x t
1728 = p x 9 x 8
p = 1728/72 = 24 cm
semoga membantu ^_^
=12×12×12=1.
panjang balok=9×8=72
=1.728÷72
=24.