Similar polygons

YesseTheGreat

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Joined
Sep 11, 2006
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I need help on how to do something in my geometry homework. I don't know how to do these kind of problems. It says:

The smaller of two similar rectangles has dimensions 4 and 6. Find the dimensions of the larger rectangle if the ratio of the perimeters is 2 to 3.

shorter side x=?, longer side x=?

I also don't understand what ratios have to do with geometry at all. Can you please explain it to me? :?
 
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