a. luas permukaan balok = 2pl + 2pt + 2lt
= 2.12.8 + 2.12.9 + 2.8.9
=192 + 216 + 144
=552
b. volume balok = 12 . 8 . 9 = 864
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a. luas permukaan balok = 2pl + 2pt + 2lt
= 2.12.8 + 2.12.9 + 2.8.9
=192 + 216 + 144
=552
b. volume balok = 12 . 8 . 9 = 864
: 2 x ( 12 x 8 x9 )
: 2 x 864
: 1728 cm2
B. v : p x l x t
: 12 x 8 x 9
: 864 cm3