The figures are similar. Find the missing length.

Step-by-step explanation:
The figure is Similar.
Observation:-
Similar figures have similar sides. If we see carefully in smaller triangle, 3 has been added to each side and they are similar. We need to find y.
We have :-
5+3=8 as similar sides.
So, applying same algorithm,
[tex]y + 3 = 5[/tex]
[tex]y = 5 - 3[/tex]
[tex] \boxed{ \tt{y = 2 \ cm}}[/tex]
is the answer.
Hope it helps :)