Question

The equilateral triangles shown below are similar 2 cm, 5 cm. What is the ratio of their areas?

Answer 1

The ratio between the area of two similar triangles can be described using the following expression:

`(A_1)/(A_2)=((side_1)/(side_2))^2_{}`

Applying the data from the problem we have:

`\begin{gathered} (A_1)/(A_2)=((2)/(5))^2 \\ (A_1)/(A_2)=(4)/(25) \end{gathered}`

The answer is A.