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x-szer.
x-10-dł
2x+2x-20=36
4x=56
x=14
szer=14cm
dł=4cm
P=ab
P=14*4=56cm2
4 cm + 14 cm = 18 cm
krótszy bok = 4 cm
dłuższy bok = 14 cm
P = 4 x 14 = 56 cm ²
36=4x+20
16=4x
x=4
P=4*14=56
Odp. pooe wynosi 56, a dlugosci bokow 4 i 14