krawędź boczna 3x
krawędź podstawy x
V=x×x×3x=3
81= /"3
=27
x=3
Pp= 3×3=9
Pb=3×9=27
Pc=4×27+2×9=108+18=126
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krawędź boczna 3x
krawędź podstawy x
V=x×x×3x=3
81= /"3
=27
x=3
Pp= 3×3=9
Pb=3×9=27
Pc=4×27+2×9=108+18=126