Đổi các đơn vị sau: 1,401 km^2 = ..... m^2
1,401km2 = .............................................m2
3,2 m2 = .............................................cm2
0,075hm2 = .............................................m2
7,34 m = .......................m..................cm
3,6km =............................................m
3,12dm2 = .............................................cm2
213 m2 = .............................................dam2
12 m24cm2 = ..........................................m2
4km2 5m2= ....................................ha
2,34m2 = ..........................m2.............dm2