Luas karton yg diperlukan
[tex] 2(P \times L) + (p \times l)\\ 2(7 \times 1 ) + (2 \times 1) \\ 14 + 2 \\ 16 \: {cm}^{2} \: (C)[/tex]
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Luas karton yg diperlukan
[tex] 2(P \times L) + (p \times l)\\ 2(7 \times 1 ) + (2 \times 1) \\ 14 + 2 \\ 16 \: {cm}^{2} \: (C)[/tex]