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Luas persegi panjang 2 = 20 x 6 = 120 cm²
Luas segitiga 1 = 4 x 3 : 2 = 6 cm²
Luas segitiga 2 = 4 x 3 : 2 = 6 cm²
Luas bangun = 36 + 120 + 6 + 6 = 168 cm²
L1=1/2×32×3
L1=48
L2= 20×6
L2=120
L total=48+120=168