a) \(5,34km^2= 5 \dfrac {34}{100}km^2= 5km^2 \;34ha\) \(= 534ha\) ;
b) \(16,5m^2=16 \dfrac {5}{10}m^2= 16 \dfrac {50}{100}m^2\) \(= 16m^2\;50dm^2\) ;
c) \(6,5km^2= 6 \dfrac {5}{10}km^2= 6 \dfrac {50}{100}km^2\) \(= 6km^2\;50ha= 650ha\) ;
d) \(7,6256ha = 7 \dfrac {6256}{10000}ha = 7\)ha \(6256m^2\) \(=76 256m^2\).