Question

9 cm² 25 cm² what is the similarity ratio?

Answer 1

See explanation.

Explanation:

The theorem says that:

If two figures are simmilar and the scale of similarity is `k` then the ratio of areas of those figures is `k^2`.

In this question we know that the figures are simmilar and we have the areas given, so we can calculate the similarity ratio. From the theorem we know that

`k^2=25/9`

If we solve this equation we find that the scale of similarity is:

`k=5/3`