1m295dm2=..........cm2 ; 1/5 km2 = ........m2 ;460 086 cm2 = ........m2...........cm2;1/4 dm2 = .....cm2 help me và cho hay nhất :((((

Đáp án:

1m295dm2=..39500..cm2

(1m2+295dm2=10000 cm2+29500 cm2=39500cm2)

1/5 km2 =200 000 m2

(1/5km2=1km2 :5=1 000 000m2: 5=200 000m2)

460 086 cm2 = 46 m2....86.......cm2

(460 000 cm2=46 m2,086 cm2=86 cm2)

1/4 dm2 =25 cm2

 (1.4 dm2=100 cm2:4=25 cm2)