[tex]luas \: trapesium \: \\ l = \frac{(jumlah \: sisi \: sejajar \times tinggi)}{2} \\ l = \frac{(13 + 7) \times 8}{2} \\ luas \: = \: \frac{20 \times 8}{2} \\ = \frac{160}{2} \\ = 80 \: {cm}^{2} \\ \\ keliling \: trapesium \\ \\ k = a + b + c + d \\ = 7 + 10 + 13 + 8 \\ = 38 \: cm[/tex]
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[tex]luas \: trapesium \: \\ l = \frac{(jumlah \: sisi \: sejajar \times tinggi)}{2} \\ l = \frac{(13 + 7) \times 8}{2} \\ luas \: = \: \frac{20 \times 8}{2} \\ = \frac{160}{2} \\ = 80 \: {cm}^{2} \\ \\ keliling \: trapesium \\ \\ k = a + b + c + d \\ = 7 + 10 + 13 + 8 \\ = 38 \: cm[/tex]