pusti budet tak:
M∈BC
E∈AC
N∈AB
BC=6 m
A=30 gradusov
sin 30=1/2
1/2=BC/AB
1/2=6/AB
AB=12 m
AC^2=AB^2-BC^2
AC^2=144-36
AC^2=108
AC=6√3 m
ME=1/2*AB=1/2*12=6 m
EN=1/2*BC=1/2*6=3 m
MN=1/2*AC=1/2*6√3=3√3 m
P=6+3+3√3=3(3+√3) m
