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Question

The perimeters of two similar triangles are 25 cm and 15 cm respectively. If one side of first triangle is 9 cm, what is the corresponding side of the other triangle?

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Solution

Ratio of perimeter of similar triangle = Ratio of their corresponding sides
25 over 15 equals 9 over x x space equals space 9 space cross times 15 over 25 x space equals 5.4
The corresponding side is 5.4 cm

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