20cm=0,2m
P₁=0,2²=0,04m²
P₂=8*6=48m²
P₂/P₁=48:0,04=1200-klepek
48*100=4800zł-całkowity koszt
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20cm=0,2m
P₁=0,2²=0,04m²
P₂=8*6=48m²
P₂/P₁=48:0,04=1200-klepek
48*100=4800zł-całkowity koszt