Luas permukaan prisma ∆
[tex](a \times t) + (a + t + m) \times tp) \\ (5 \times 12) + (5 + 12 + 13) \times 8) \\ 60 + (30 \times 8) \\ 60 + 240 \\ 300 \: {cm}^{2} [/tex]
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Luas permukaan prisma ∆
[tex](a \times t) + (a + t + m) \times tp) \\ (5 \times 12) + (5 + 12 + 13) \times 8) \\ 60 + (30 \times 8) \\ 60 + 240 \\ 300 \: {cm}^{2} [/tex]