Question

plz slove this answer me​

Answer 1

Answer:

The height of the wall is 12m.

Answer 2

Answer:

In ∆ABC

AC^2=AB^2+BC^2

15^2=AB^2+9^2

225=AB^2+81

225-81=AB^2

144=AB^2

AB=√144=12m

So,the right answer is 12m