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p2=80cm x 80cm= 0.8m x 0.8m =0.64m²
p3=30cm x 30cm= 0.3m x 0.3m=0.09m²
pozostałe pole
pp= 1.848 - 0.64 - 0.09 = 1.118 m² = 11180 cm²
pkw - pole kwadratu
Pck - pole całkowite kartonu
Pk=154*120
Pk=18480 cm kwadratowych
Pkw1=80*80
Pkw1=6400
Pkw2=30*30
Pkw2=900
Pckw=6400+900
Pckw=7300
Pck=18480-7300
Pck=11180cm kwadratowych