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b = 150 cm - 10 cm = 140 cm
P = a * b
P = 70 cm * 140 cm = 9 800 cm² = 0,98 m²
Odpowiedź D. jest prawidłowa.
80cm - 5cm -5cm = 70cm
P = 140cm * 70cm = 9800cm² = 0,98m²
Odp. D