BM=AMx1.2=4.8m
NC=DN=4m
MN=AD=6m
BC=4.8+6+4=14.8m
EP=4.5m
BP=4.5x1.2=5.4m
CQ=FQ=4.5m
EF=PQ=14.8-5.4-4.5=4.9m
(1)BC=AD+1.2*h+h=14.8m(2)EF=AD-1.2*0.5-0.5=4.9m
