Question

I’m confused on whether its 12 or 18, pls help

Answer 1

Notice that the triangles ABC and AMN are similar.

Thus:

`(AC)/(MN) = (AB)/(MB)\\\\(AC)/(6) = (8)/(4) = 2\\\\ AC = 12\,\,ft.`

Answer 2

12 ft I think because 18 would be too long