Evaluate
69\sqrt{3}\approx 119.511505722
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2\times \frac{138\sqrt{3}}{4}
Multiply 6 and 23 to get 138.
2\times \frac{69}{2}\sqrt{3}
Divide 138\sqrt{3} by 4 to get \frac{69}{2}\sqrt{3}.
69\sqrt{3}
Cancel out 2 and 2.
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