SOLUTION: A right triangle has a height 8cm more than twice the base. If the area of the triangle is 96cm^2, what are the dimensions of the triangle?

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Question 123863: A right triangle has a height 8cm more than twice the base. If the area of the triangle is 96cm^2, what are the dimensions of the triangle?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!



Discussion



We need to use the formula for the area of a triangle A=%28bh%29%2F2, and the
fact that the base and the height can be described one in terms of the other.





Solution



Let the short leg be x, and then the longer leg would be 2x + 8.

We are given that the area of the triangle is 96cm%5E2, so
%28x%282x%2B8%29%29%2F2=96

2x%5E2%2B8x=192

2x%5E2%2B8x-192=0

x%5E2%2B4x-96=0

%28x%2B12%29%28x-8%29=0

x=-12 or x=8

Since a triangle leg with a negative length measure doesn't make much sense,
exclude the negative value. The short leg measures 8, therefore the long leg
measures 2%288%29%2B8=24





Check Answer



%2824%2A8%29%2F2=96. Answer checks.