5 dam^2=5*(10^4)dm^2=50000dm patrat
4320 cm^2=4320*(10^-2)dm ^2=43,2 dm patrat
2,4m ^2 =2,4*(10^2)dm ^2=240dm patrat
0,12 hm ^2=0,12 *(10^6)dm ^2=120000dm patrat
==>>>> calculul este egal cu===(50000+43,2-240+120000)dm patrat=(170000-196,8)dm patrat=169803,2 dm patrat
sper ca nu am gresit la calcule..succes
