1a)
P=300+300+100+100+2L= 800+2L
2b)
Aria ABCD=300×50=15000 metri patrati
Aria BNPQ=100×L
Aria ABCD=Aria BNPQ rezulta
100×L=15000
L=15000:100
L=150m
c) Aria BNPQ= 150×100=15000m^2=1,5 hectare
2. a)
Diagonala cub=Lradical3
Rezulta L=6m
Volumul cub= l^3 (l puterea a treia inseamna)
V=6×6×6=216m^3
