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b) PP= 2×(2×3) + 2×(2×4) + 2×(3×4)= 52cm2 Odp. C
a) 2cm*3cm*4cm=24cm^3
b)[(2cm*3cm)+(3cm*4cm)+(2cm*4cm)]*2=52cm^2
W oby dwóch odp. C