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1,5dm = 15cm
P= 15cm * 4,5cm = 67,5cm ( kwadratowych)
Zad2.
92mm = 9,2 cm
P = 6cm * 9.2 cm = 55,2 cm (kwadratowych)
4,5cm.
15 cm × 4,5 cm = 67,5 cm²
b) ½ah
6cm × 9,2 cm = 55,2 cm₂