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L=4,6*2+2,5*2=14,2
b) P=5,8*1,6=9.28
L=5,8*2+1,6*2=14,8
Potrzebne wzory
P=a*b
Obw=2ab
a)P=4.6*2,5=11.5
Obw=14,2
b)P=9,28
Obw=14,8