Question 206517
{{{A=(h/2)(b[1]+b[2])}}} Start with the given equation.



{{{2A=h(b[1]+b[2])}}} Multiply both sides by 2.



{{{(2A)/(b[1]+b[2])=h}}} Divide both sides by {{{b[1]+b[2]}}}.



{{{h=(2A)/(b[1]+b[2])}}} Rearrange the equation.



So the solution is {{{h=(2A)/(b[1]+b[2])}}}