P=a*a
a=0,47m
P=0,47m*0,47m=0,2209m^2
Potrzeba 0,2209m^2 koronki
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P=a*a
a=0,47m
P=0,47m*0,47m=0,2209m^2
Potrzeba 0,2209m^2 koronki