Question

similar polygons
these polygons are similar. solve for x.
x = ?

Explanation:

Step1: Find similarity ratio

$\text{Ratio} = \frac{12}{4} = 3$

Step2: Set up proportion for $x$

$\frac{x}{3} = 3$

Step3: Solve for $x$

$x = 3 \times 3$

Answer:

9