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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
3i1/7 x= 44
22/7x = 44 |: 22/7
x= 14cm
4/7×14 = 8cm
P=14×8= 112cm²