Penjelasan dengan langkah-langkah:
tΔ² = t² + (s/2)² = 8² + (12/2)² = 64 + 36 = 100 tΔ = √100 = 10 cmL limas tanpa alas = 4 × LΔ = 4 × 1/2 × 12 × 10 cm² = 240 cm²L P balok tanpa tutup atas = (s × s) + (4 × s × t) = (12 × 12) + (4 × 12 × 6) = 144 + 288 = 432 cm²L seluruh = 240 cm² + 432 cm²
tΔ² = t² + (s/2)² = 8² + (12/2)² = 64 + 36 = 100 tΔ = √100 = 10 cmL limas tanpa alas = 4 × LΔ = 4 × 1/2 × 12 × 10 cm² = 240 cm²L P balok tanpa tutup atas = (s × s) + (4 × s × t) = (12 × 12) + (4 × 12 × 6) = 144 + 288 = 432 cm²L seluruh = 240 cm² + 432 cm² = 672 cm²
semoga membantu
jadikan jawaban terbaik
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