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Persegi Panjang = p x l
= 20 x 14
= 280 cm²
Trapesium = (a+b) x t : 2
= (20 + 30) x 16 : 2
= 50 x 16 : 2
= 800 : 2
= 400 cm²
L. Gabungan = 280 + 400 = 680 cm²
Maaf klo slah