2800dm2=..280000..cm2

8000000m2=...8.km2

21dm2 46cm2 = .......2146.....cm2 

3m2 4dm2 =..30400..cm2

2800dm2=..280000..cm2

8000000m2=.8.km2

21dm2 46cm2 = ...2146.....cm2 

3m2 4dm2 =..30400.cm2

\(\frac{2}{8}km^23m^2=0,25km^23m^2=2500030000cm^2\)

\(\frac{2}{5}m^232dm^2=0,4m^232dm^2=7200cm^2\)

\(\frac{3}{8}km^224m^2=0,375km^224m^2=3750240000cm^2\)

\(\frac{2}{4}m^2321dm^2=0,5m^2321dm^2=37100cm^2\)

CHÚC BN HỌC TỐT!!!!!

22m24dm2=..2224.. dm2   

3m2 410cm2=...30410. cm2   

 3428dm2=.34... m2 .28.. dm2     

4000109m2=..4.... km2 .109.... m2       

19m2 60 cm2=...190060. cm2     

62m2 9cm2=...620009.. cm2

22m24dm2=..2224.. dm2   

3m2 410cm2=..30410.. cm2     

3428dm2=..34.. m2 ..28.. dm2     

4000109m2=..4.... km2 .109.... m2

19m2 60 cm2=..190060.. cm2     

62m2 9cm2=..620009... cm2

Trả lời :

3m2  5cm2 =  3,00005....cm2

học tốt

@@

bang 30005m2

TL

2km2 235m2 = 2 000 235 m2

5km2 40m2= 5 000 040 m2

3m2 25dm2 = 32 500 cm2

8m2  5dm2  12cm2 = 80 512 cm2

HT

2km2 235m2= 2235m2

5km2 40m2 = 5040m2

3m2 25dm2 = 3250 cm2

8m2 5dm2 12cm2 =  80512 cm2   phải ko bn

3m² 5dm² = 30000cm² 500cm² = 30500cm²

Vậy 3m² 5dm² = 30500cm²

Bằng 30500cm2 nhé

Chúc bạn học giỏi

`3m^28400cm^2=3xx10000+8400=38400cm^2`

\(3m^28400cm^2=308400cm^2\)

a) 6m² 76 dm² = 600 dm² + 76 dm² = 676 dm²

b) 3dm² 15 cm² = 300 cm² + 15 cm² = 315 cm²

c) 3m² 2 dm² = 300 dm² + 2 dm² = 302 dm²

d) 8m² 4 cm² = 80 000 cm² + 4 cm² = 80 004 cm²

3m2 9cm2=329cm