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6*6*6=216
a=2cm
b=4cm
c=10cm
Pc= 2ab + 2ac + 2bc
Pc= 2×2×4 + 2×2×10 + 2×4×10= 16+40+80=136 cm²
*sześcianu o krawedzi 6 cm
Pc= 6a²
Pc= 6×6²=216 cm²