MB/AM=3/5=>MB=3AM/5
AB=AM+MB=AM+3AM/5=8AM/5
AB=24=>8AM/5=24=>8AM=120=>AM=15
MB=3AM/5=3*15/5=9
MN||BC=>(Teorema fundamentala a asemanarii):AM/AB=AN/AC=>AN=AM*AC/AB=15*32/24=20
AC=AN+NC=>NC=AC-AN=32-20=12
MN||BC=>(Teorema fundamentala a asemanarii):AM/AB=MN/BC=>MN=AM*BC/AB=15*48/24=30
P_MBCN=MB+BC+CN+NM=9+48+12+30=99