Luas permukaan prisma ∆
[tex](a \times t) + (a + t + m) \times tp) \\ (18 \times 24) + (18 + 24 + 30) \times 28) \\ 432 + (72 \times 28) \\ 432 + 2.016 \\ 2.448 \: {cm}^{2} [/tex]
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Luas permukaan prisma ∆
[tex](a \times t) + (a + t + m) \times tp) \\ (18 \times 24) + (18 + 24 + 30) \times 28) \\ 432 + (72 \times 28) \\ 432 + 2.016 \\ 2.448 \: {cm}^{2} [/tex]