`9m^2 = 90000 cm^2`
`25 km^2 = 25000000 m^2`
`25m^2 = 2500dm^2`
`250000 cm^2= 25m^2`
9m2=9000...(sai hay sao ý) 25km2=25000000.m2.. 25m2=2500..dm2. 250000cm2=25m2...
\(\text{9m2=90000cm2}\)
\(\text{25km2 = 25000000m2}\)
\(\text{25m2 = 2500dm2}\)
\(\text{250000cm2 = 25m2}\)