Problema 8 va rooogggg!!!!dau coroana

L=25m
l=0,005 km=5 m
Pdreptunghi=2×L+2×l=2×25+2×5=60 m
Ppatrat=4×l=60
l=60/4=15 m
Ptriunghiechilateral=3×l=60
l=60/3=20 m
Pcerc=2*pi*r=60
pi=3.14
r=60/6.18=9.55 m