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b) P=2,3dmx2,3dmx6=31,74dm²=3174cm²
c) P=0,9mx0,9mx6=4,86m²=48600cm²
b- 2,3dm=23cm
P=6*23 do kwadratu= 3174 cm2
c- 0.9m=90cm
P=6*90 do kwadratu= 48600cm2
b) 23(cm)x23(cm)x6= 529x6= 3174 cm2 (31,74 dm2)
c) 90(cm)x90(cm)x6 = 8100x6 = 48600 cm2 ( 4,86 m2)