Tolonggg sahiyaaa kakss_(:3 」∠)_
Jawaban:
1. 1.256 cm²
2. 450 cm²
Penjelasan dengan langkah-langkah:
1. Lp = (5(8 cm)²) + (2(10 cm)² + (4(10 cm × 20 cm) - (8 cm)²)
= 5(64 cm²) + (2(100 cm²) + (4(200 cm²) - 64 cm²)
= 320 cm² + (200 cm² + 800 cm² - 64 cm²)
= 320 cm² + 936 cm²
= 1.256 cm²
2. Lp = 3(5(s²)) + 3(s²)
= 3(5(5 cm)²) + 3(5 cm)²
= 3(5(25 cm²) + 3(25 cm²)
= 3(125 cm²) + 75 cm²
= 375 cm² + 75 cm²
= 450 cm²
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