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Verified answer
280 cm = 2 x ( 55 cm + p )= 110 cm + 2p
2P = 280 cm - 110 cm
= 170 cm
P = 170 cm : 2 = 85 cm
Jadikan jawaban tercerdas ya.
Verified answer
K persegi panjang = 2(p+l)280 = 2(p+55)
280 = 2p+110
280-110 = 2p
170 = 2p
170/2 = p
85 cm = p
Jadi, panjang permukaan meja tersebut adalah 85 cm
*semoga membantu. sukses selalu ^_^