Triangle ABC is similar to triangle FGH. What is the value of x in centimeters?A. 22.5 cmB. 21 cmC. 10.8 cmD. 30 cm

first we can calculate the coefisient between the triangles so we use two sides that we know so:
[tex]\frac{13.5}{9}=2.25[/tex]So now we can calculate x like:
[tex]\begin{gathered} x=2.25\cdot15 \\ x=33.75 \end{gathered}[/tex]