解得:
设a:b:c=3:5:7,则:a=3k,b=5k,c=7k
由三角形面积公式,可得:(1/2)a*ha=(1/2)b*hb=(1/2)c*hc
所以:3k*ha=5k*hb=7k*hc
即:3ha=5hb=7hc
则:hb=(3/5)ha,hc=(3/7)ha
所以:ha:hb:hc=ha:(3/5)ha:(3/7)ha=1:(3/5):(3/7)=35:21:15
解得:
设a:b:c=3:5:7,则:a=3k,b=5k,c=7k
由三角形面积公式,可得:(1/2)a*ha=(1/2)b*hb=(1/2)c*hc
所以:3k*ha=5k*hb=7k*hc
即:3ha=5hb=7hc
则:hb=(3/5)ha,hc=(3/7)ha
所以:ha:hb:hc=ha:(3/5)ha:(3/7)ha=1:(3/5):(3/7)=35:21:15