Jawabanmu

2014-05-30T19:04:40+07:00
P = 40cm
l = 45 cm
v = 108 liter = 108000 cm³
v = p.l.t
108000 = 40.45.t
108000 = 1800t
t = 108000/1800
t =60 cm
8 4 8