Penjelasan dengan langkah-langkah:
L = 2 . La + Ka . t
= 2 . ½ . 5 . 12 + (5 + 12 + 13) . 18
= 60 + 540
= 600 cm²
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Penjelasan dengan langkah-langkah:
L = 2 . La + Ka . t
= 2 . ½ . 5 . 12 + (5 + 12 + 13) . 18
= 60 + 540
= 600 cm²