vannbj wrote:

I thought this one was a doosey if you don't know the rules to triangles very well. Tell me what you think.

Two similar triangles have areas in the ratio of 9:1. What is the ratio of these triangles' perimeters?

3:1. Just remember the following formula:

Area of triangle A/Area of triangle B = Square of side a/Square of side b.

You can use this formula to answer questions asked on either end (sides or areas)