Wszystko w załączniku .
Zad. 7
Obw.:= a+a+2a+3a
Zad. 8
Obw.: 6 cm+ 6 cm+2*6 cm+3*6 cm=42 cm
zad 7 obw = a +a +3a+2azad 8 6+6+3*6 +2*6 = 6+6+ 18 +12 = 12+18 +12 = 42 cm
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Zad. 7
Obw.:= a+a+2a+3a
Zad. 8
Obw.: 6 cm+ 6 cm+2*6 cm+3*6 cm=42 cm
zad 7
obw = a +a +3a+2a
zad 8
6+6+3*6 +2*6 = 6+6+ 18 +12 = 12+18 +12 = 42 cm