выразите в квадратных милиметрах:6см/2 15мм/2; 3дм/2 8мм/2
6сm/2 15мм2=615мм2
3дм2 8мм2=30008мм2 ..............................................................................................................................................................................................................................................................................................
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6сm/2 15мм2=615мм2
3дм2 8мм2=30008мм2 ..............................................................................................................................................................................................................................................................................................