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keliling = 2x(p+l) ⇔p+l= k/2=260cm:2=130cm
p-l=(9-4)/(9+4) × 130cm= 5/13 × 130 cm= 50 cm
selisih panjang dan lebar meja tersebut = 50 cm
panjang meja = 9/13 x 260 = 180 cm
lebar meja = 4/13 x 260 = 80 cm
selisih panjang dan lebar meja
= 180 - 80 = 100cm