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x - szerokość prostokąta
y - długość prostokąta
2(x+y) = 44cm
x+y = 22cm
x = 4/7y
11/7y = 22cm
y = 14cm
x = 4/7 * 14cm = 8cm
P = 8cm * 14cm = 112cm²
Odp: Pole tego prostokąta wynosi 112cm².