Penjelasan dengan langkah-langkah:
= 2 × luas alas + keliling alas × tinggi
= 2 × (1/2 × a × t) + (6 + 8 + 10) × 15
= 2 × (1/2 × 6 × 8) + 24 × 15
= 2 × 24 + 360
= 48 + 360
= 408
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Penjelasan dengan langkah-langkah:
= 2 × luas alas + keliling alas × tinggi
= 2 × (1/2 × a × t) + (6 + 8 + 10) × 15
= 2 × (1/2 × 6 × 8) + 24 × 15
= 2 × 24 + 360
= 48 + 360
= 408