1м9дм=100см+90см=190 см;
длина= 110+190= 300см;
периметр= 2*(110+ 300) = 820см =82дм =8.2м
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1м9дм=100см+90см=190 см;
длина= 110+190= 300см;
периметр= 2*(110+ 300) = 820см =82дм =8.2м