Chapter: Similarity· Mathematics Part 2 (Geometry)
Answer: 9 : 25
By the theorem of areas of similar triangles, the ratio of the areas of two similar triangles equals the ratio of the squares of their corresponding sides.
\(\dfrac{A_1}{A_2} = \left(\dfrac{3}{5}\right)^2 = \dfrac{9}{25}\). So the areas are in the ratio 9 : 25.