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Pp=9*2=18
Pb=a*b
Pb1=5*20=100
Pb2=9*20=180
Pb3=5*20=100
Pb4=20*9=180
Pc=2*Pp+Pb
Pc=2*18+180+100+180+100=36+560=596
P=2*a*h+a*b
P=2*2*9+2*20
P=36+22=58 dm
* to jest razy