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student12524

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In the figure, an equilateral triangle is cut into 9 equal equilateral triangles. If the total perimeter of the 9 small triangles is 54 cm more than the perimeter of the original triangle, find the length of a side of the original triangle.

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  • eric
    2019-08-29 16:37:41
    9x=54+3x, where x is the length in question
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