Eighteen equilateral triangles are joined together as shown in the f
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27 Jan 2025, 23:44
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Eighteen equilateral triangles are joined together as shown in the figure below. If the length of the sides of each triangle is 1, what is the perimeter of the whole figure?
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GRE polygon.png [ 25.85 KiB | Viewed 74 times ]
A. 10
B. 11
C. 12
D. 13
E. 14
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