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a*a = 0,64m²
a = 0,8m
Ob = 4a
Ob = 4*0,8m
Ob = 3,2m
a=
P=0,64m²
a=
a=0,8
Obw=4a
Obw=4×0,8
Obw=3,2m
Liczę na naj:)