a. $6ha=\frac{6}{10000}m^{2}$
$3km^{2} = 3 000 000 m^{2}$;
$400dm^{2} = 4m^{2}$.
b. $26m^{2}34dm^{2}=26m^{2}+\frac{34}{100}m^{2}=26\frac{34}{100}m^{2}$
$1500dm^{2}=15m^{2}$
$90m^{2}5dm^{2}=90m^{2}+\frac{5}{100}m^{2}=90\frac{5}{100}m^{2}$
a. $6ha=\frac{6}{10000}m^{2}$
$3km^{2} = 3 000 000 m^{2}$;
$400dm^{2} = 4m^{2}$.
b. $26m^{2}34dm^{2}=26m^{2}+\frac{34}{100}m^{2}=26\frac{34}{100}m^{2}$
$1500dm^{2}=15m^{2}$
$90m^{2}5dm^{2}=90m^{2}+\frac{5}{100}m^{2}=90\frac{5}{100}m^{2}$