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The area of the smllaer of two similar triangles is 1/9 the area of the larger triangle.
Suppose one side of the triangle is 3.6m. What is the length of the corresponding side of the larger triangle? Suppose one side of the larger triangle is 36m. What is the length of the corresponding side of the smaller triangle?

If the areas are in a 1:9 ratio, the corresponding side lengths are in a 1:3 ratio.

If a side length os the smaller triangle is 3.6 m, the larger triangle must have a corresponding side length of 10.8 m.. and so forth.

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