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odp. C , bo 6 cm2 : 2 = 3cm2 12 cm2 : 2 = 6cm2
zad.3
odp.D , bo 5 cm x 9 = 45 cm 9 - ilość boków trójkątów
zad.4
odp.B , bo 10 cm - 2 cm = 8cm bcm - 2 cm = 6 cm 10 cm + 8 cm + 6 cm = 24 cm