Luas permukaan balok
[tex]2(p \times l + p \times t + l \times t) \\ 2(2 \times 1,5 + 2 \times 1 + 1,5 \times 1) \\ 2(3 + 2 + 1,5) \\ 2(6,5) \\ 13 \: {m}^{2} [/tex]
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Luas permukaan balok
[tex]2(p \times l + p \times t + l \times t) \\ 2(2 \times 1,5 + 2 \times 1 + 1,5 \times 1) \\ 2(3 + 2 + 1,5) \\ 2(6,5) \\ 13 \: {m}^{2} [/tex]