L Persegi Panjang = Panjang × Lebar
L Bangun
= L 1 + L 2 + L 3
= p.l + p.l + p.l
= 10.5 + 18.5 + 10.(18-10)
= 50 + 90 + 10.8
= 140 + 80
= 220 cm²
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L Persegi Panjang = Panjang × Lebar
L Bangun
= L 1 + L 2 + L 3
= p.l + p.l + p.l
= 10.5 + 18.5 + 10.(18-10)
= 50 + 90 + 10.8
= 140 + 80
= 220 cm²