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1. Persegi panjang
Luas = p xl
= 18 x 11 = 198 cm²
2. segitiga
luas = 1/2 x a x t
= 1/2 x 11 x (22-18)
= 1/2 x 11 x 4
= 22 cm²
luas keseluruhan = 198 + 22 = 220 cm²