а=3м 5 дм = 35 дм
б=1м2дм= 12 дм
Р=2(35+12)=2*47=94 дм = 9м 4 дм
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а=3м 5 дм = 35 дм
б=1м2дм= 12 дм
Р=2(35+12)=2*47=94 дм = 9м 4 дм