1a=100m^2
1km^2=100ha
a)
3200m^2=32a
0,5km^2=0,5*100ha=50ha=50*100a=5000a
b)
1ha= 10000m^2
320000m^2=32ha
800a=8ha
0,7 km^2=70ha
c)
250a=25000m^2
0,4ha=0,4*10000m^2=4000m^2
2,7ha=2,7*10000m^2=27000m^2
d)
150ha=1,5km^2
1000000m^2=100ha=1km^2
45ha=0,45km^2