The ratio of the areas of two similar polygons is 121:225. If the perimeter of the first polygon is 60 cm, what is the perimeter of the second polygon? Round to the nearest tenth of a centimeter.

Question

anonymous · Answer

The ratio of the perimeters is going to be the square root of the first area to the square root of the second area:

11:15

So,  11/15  =  60/x

anonymous · Answer

All good now, @trig1234 ?

anonymous · Answer

So would you assume the polygon is a square?

anonymous · Answer

It could be any 2-dimensional figure.  You'll notice that it also works for triangles.  And from that, you can subdivide any 2 similar polygons into a set of corresponding sets of similar triangles.

anonymous · Answer

ok thanks

anonymous · Answer

uw!