You can put this solution on YOUR website! Use Heron's area formula to find the area. the sides are a, b & c
A=sqrt(s(s-a)(s-b)(s-c)) where s=(a+b+c)/2
Once you know the area use the formula for the area of a triangle to find the altitude. a=altitude b=base A=area
A=ab/2
a=2A/b
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Ed