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162 cm² = (9×y) × (4×y) × 1/2
162 cm² = 36 y² × 1/2
162 cm² = 18 y²
9 cm = y²
3 cm = y
Diagonal 1 = 9 × y = 9 × 3 = 27 cm
digonal 2 = 4 × y = 4 × 3 = 12 cm
Panjang diagonal terpendek = 4 ×3 = 12 cm
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