Penjelasan dengan langkah-langkah:
L = 2pl + 2pt + 2lt
L = 2.10.10 + 2.10.6 + 2.10.6
L = 200 + 120 + 120
L = 440 cm²
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Penjelasan dengan langkah-langkah:
L = 2pl + 2pt + 2lt
L = 2.10.10 + 2.10.6 + 2.10.6
L = 200 + 120 + 120
L = 440 cm²