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x+2-> drugi bok prostokąta
L=2x+2(x+2)
36=2x+2x+4
-4x=-32 /:(-4)
x=8cm
x+2 = 8+2=10
P= x(x+2)
P= 8*10
P=80cm kwadratowych
Odp. Dopiszesz ...
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