a)3 m2 12 dm2 = ..312.dm2
23 m2= 230000...cm2
57 dam2 = 570000… dm2
4 m2 5dm2 = .405..dm2
40 dm2 = .0,4.. m2
410506 m2 = .41,0506 ha
7 m2 203 dm 2 = 9,03 m2
244200 cm2 = 0.002442 hm2
412 m2 = 0,0412 .hm2...
51 m2 34 cm2 = .51.0034.. m2
407 cm2 = 0.0407 m2
2 m2 76 dm2 = 2.76 m2