a)P-CMB=30+30+40=100cm
P-DMC=30+40+80=150cm
P-ADB=40+80+70=190cm
b)100+150+190=440
a)
P(DMC) = DM + MC + DC = 40 +30 +80 = 150 cm
P(CMB) = CM + BM + BC = 30 + 30 + 40 = 100 cm
P(ADB) = AD + AB + BD = 40 + 80 + (30 + 40) = 190 cm
b)
S = 150 + 100 + 190 = 440 cm
