SOLUTION: if I'm told the area of a triangle is 81 inches squared and the base is twice the height how do I solve?

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Question 612538: if I'm told the area of a triangle is 81 inches squared and the base is twice the height how do I solve?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
2x*x=81
2x^2=81
x^2=81/2
x^2=40.5
sqrt 40.5=6.36 in
2x=12.73 in