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Question

The ratio of the areas of two similar triangles is 25:16. The ratio of their perimeters is ..............

A
625:256
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B
5:6
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C
25:16
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D
5:4
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Solution

The correct option is D 5:4
The ratio of areas of given similar triangles =25:16
And we know that, ratio of areas of two triangles is same as the ratio of squares of their corresponding sides
Ratio of the corresponding sides of the similar triangles =2516=54=5:4
The ratio of the perimeters of given similar triangles =5:4
Hence, the answer is 5:4.

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