A.10m;2% B.12m;2% C.10m;5% D.12m;5%
A.7m/s;7m/s B.7m/s;10m/s C.10m/s;7m/s D.10m/s;10m/s
A.8000m2 B.10000m2 C.15000m2 D.20000m2