If the ratio of the side lengths of two similar figures is

3/5, what is the ratio of their areas

[] 3/5
[] 9/25
[] 27/125
[] 6/10

Ratio of areas of similar figures is the square of the ratio of their side lengths.

(3/5)^2 = 9/25

Therefore, the ratio of their areas is 9/25.

Answer: 9/25