面积=aha/2=bhb/2=chc/2ha:hb:hc=5:2:3所以a:b:c=1/ha:1/hb=1/hc=1/5:1/2:1/3同乘以30a:b:c=6:15:10
设面积为s,则a=2s/ha,b=2s/hb,c=2s/hca:b:c=2s/ha:2s/hb:2s/hc=6:15:10
a:b:c=1/5:1/2:1/3=6:15:10;