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What is the length to one side of this triangle

What is the length to one side of this triangle-example-1

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The formula of the altitude of an equilateral triangle with side x:

h=(x\sqrt3)/(2)
We have:

h=6\sqrt3
Substitute:

(x\sqrt3)/(2)=6\sqrt3\ \ \ |\cdot2\\\\x\sqrt3=12\sqrt3\ \ \ |:\sqrt3\\\\x=12

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User Mmcorrelo
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