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Luas
2 (s²)
2( (√45 / 2)²)
2 (45/4)
22,5
Jadi luas daerah no 6 adalah 22,5 cm²
2. persegi : s x s = 3 x 3 = 9 x 2 = 18
luas seluruhnya = 18 + 18 = 36