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10 November, 15:11

F the area of an equilateral triangle is 9√3 sq ft, how long is a side?

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  1. 10 November, 18:37
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    The area of an equilateral triangle is always:

    A=√ ((3s^4) / 16) or if you prefer: A = (s^2/4) √3

    So if A=9√3 we have:

    9√3 = (s^2/4) √3

    9=s^2/4

    s^2=36

    s=6 feet
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