Question

**pls help!! as soon as possible**
ill attach a screenshot of the problem.

Answer 1

9

Step-by-step explanation

ΔABC and ΔDEF are similar

∴
`(AC)/(DE)` =
`(AB)/(EF)`

∴
`(12)/(18)` =
`(AB)/(13.5)` =
`(2)/(3)`

∴ AB =
`(2)/(3)` × 13.5 = 9

Answer 2

9

Explanation:

Since the triangles are clearly indentical, the ratio of their lenghts is constant

12/18 = x/13.5

x = 2/3 * 13.5

x = 27/3

x = 9