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Pc=2Pp+pb=2a²+4a·5a=22a²
a=2
Pc=22*4=88[dm²]
wysokość wynosi 5*2dm czyli 10 dm bo ułożone zostały pionowo
Pboku= 10 *2 = 20 dm^2
Pc = 2Pp + Pb = 2Pp +4Pboku= 2*4 +4*10*2 = 8+80 = 88 dm^2