705,46cm2 =.....dm2 =......mm2;7,8m2 = .......mm2 ; 0,14ha = ......dm2; 3400,08=...km2=...dam2 2,03km2=.....m2; 2100,,34 = .....m2 = ....cm2; 4216,38dam2 = ......ha=....m2 gấp nhaaaa

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