\(15km^2=1500ha\)
\(4km^2=4000000m^2\)
\(7500ha=75km^2\)
\(\dfrac{3}{5}km^2=60ha\)
\(6km^25ha=605ha\)
\(5km^224m^2=5000024m^2\)
\(20ha=200000m^2\)
\(60000000m^2=6000ha\)
\(12000000m^2=12km^2\)
\(\dfrac{7}{100}ha=700m^2\)
\(8ha55m^2=80055m^2\)
\(15km^2345ha=1845ha\)