Odpowiedź:
A. 6×9:2 = 27 cm2
B. 5×12:2 = 30 cm2
C. 7×8:2 = 28 cm2
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P=6•9/2=32cm2
b) P=12•5/2=30cm2
c) P=8•7/2=28cm2
Odpowiedź:
A. 6×9:2 = 27 cm2
B. 5×12:2 = 30 cm2
C. 7×8:2 = 28 cm2