Answer:
8 ft
Step-by-step explanation:
We can use ratios to solve
tree Otis
-------------------- = --------------
tree shadow Otis shadow
tree 4 ft
-------------- = ----------------
9 ft 4.5 ft
Using cross products
4.5 tree = 4* 9
4.5 tree = 36
Divide each side by 4.5
tree = 36/4.5
tree =8