About how long is the log that goes across the creeks?

Answer:
6 feet
Step-by-step explanation:
we know that
The triangles of the figure are similar by AA Similarity Theorem
Remember that
If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent
Applying proportion
Let
x ----> the length of the log in feet
[tex]\frac{x}{8}=\frac{9}{12}\\\\x=8(9)/12\\\\x=6\ ft[/tex]