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a=√121=11cm
ob=4a
ob=4*11
ob=44cm²
P=121cm²
121cm²=a²
a=√121
a=11cm
obwód=4*a
ob.=4*11cm
ob.=44cm
odp.obwód kwadratu wynosi 44cm
OB=4*a
OB=4*11 = 44 cm
ODP. Obwod = 44 cm :)