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a 8 cm 1,5 dm 7 cm 10 cm 11 cm 6 m
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b 9 cm 4 dm 7 cm 15 cm 11 cm 9 m
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P = a·b 72 cm² 6 dm² 49 cm² 150 cm² 121 cm² 54 m²
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L = 2·(a+b) 34 cm 11 dm 28 cm 50 cm 44 cm 30 cm
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