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6-1,6=4,4
4,4/2=2,2
P=0,8*2,2
P=1,76 cm2(kwadratowego
2:11 = 0,(18)
druga lb jest parzysta tak jak trzydziesta czyli ta liczba to 8 :)
8mm *2=16mm
6cm=60mm
60mm-16mm=44mm
44mm:2=22mm
P=8mm*22mm=176mm²
zad2
2:11=0,181818181818181818181818181818
30 cyfra to 8