Thread: Ratio of areas

The ratio of similitude of two similar triangle is 3:5. What is the ratio of their areas?

please have a little help. I don't understand the problem on the term similitude..

thanks

Ratio of similitude refers to the ratio of the corresponding sides in the similar figures in this case the triangles.

Kalyan.

Originally Posted by rcs

The ratio of similitude of two similar triangle is 3:5. What is the ratio of their areas?

please have a little help. I don't understand the problem on the term similitude..

thanks

If you have two similar figures, then you have a scaling factor for the sides, call it k.

Then the scaling factor for the areas is k^2.

Originally Posted by Prove It

If you have two similar figures, then you have a scaling factor for the sides, call it k.

Then the scaling factor for the areas is k^2.

Therefore the areas' ratio will be 9:25 ? Is this correct sir?

Yes, well done