SOLUTION: An equilateral triangle has an altitude of 12 inches, what is the measurement of the side of the triangle?

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Question 828839: An equilateral triangle has an altitude of 12 inches, what is the measurement of the side of the triangle?
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
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x = sqrt( (x/2)(x/2) + 12*12 )
xx = xx/4 + 144
(4/4)xx - (1/4)xx = 144
(3/4)xx = 144
xx = 144*(4/3)
x = sqrt( 144*(4/3) )
x = 13.856406460551018
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answer:
side = 13.9 in.
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