Answer:
The actual height of the tree is [tex]23.4\ ft[/tex]
Step-by-step explanation:
we know that
Using proportion
see the attached figure to better understand the problem
[tex]\frac{2}{6}\frac{cm}{ft}=\frac{7.8}{x}\frac{cm}{ft} \\ \\x=6*7.8/2\\ \\ x=23.4\ ft[/tex]
