SOLUTION: The height of a triangle is one-half the length of the base. The area of the triangle is 81 in2. Find the height of the triangle.

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Question 971635: The height of a triangle is one-half the length of the base. The area of the triangle is 81 in2. Find the height of the triangle.
Answer by amarjeeth123(570) About Me  (Show Source):
You can put this solution on YOUR website!
Let the base be 2x.
Then the height is x.
Area of the triangle=1/2*base*height
Plugging in the values we get,
81=1/2*x*2x
x^2=81
x=9 inches
The height of the triangle is 9 inches.
The base of the triangle is 18 inches.