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So cut the triangle in half, giving it 90 degrees angle in one of the angles.

Then Use pathogorean theorem.

So 9 squared + b Squared = 18 squared

81+b squared = 334 squared

Answer: Square root of 233

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โˆ™ 2011-09-30 00:30:17
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Q: What is the area of an equilateral triangle with the side lengths of 18?
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