$5ha = 50000m^{2}$
$2km^{2}= 2000000m^{2}$
$400dm ^{2}=\frac{400}{100}m^{2} = 4 m^{2}$
$1500dm^{2}= 15m^{2}$
$70000cm^{2}=7 m^{2}$
$26m^{2}17dm^{2}=26\frac{17}{100}m^{2}$
$90m^{2}5dm^{2}=90\frac{5}{100}m^{2}$
$35dm^{2}=\frac{35}{100}m^{2}$
$5ha = 50000m^{2}$
$2km^{2}= 2000000m^{2}$
$400dm ^{2}=\frac{400}{100}m^{2} = 4 m^{2}$
$1500dm^{2}= 15m^{2}$
$70000cm^{2}=7 m^{2}$
$26m^{2}17dm^{2}=26\frac{17}{100}m^{2}$
$90m^{2}5dm^{2}=90\frac{5}{100}m^{2}$
$35dm^{2}=\frac{35}{100}m^{2}$