Step-by-step explanation:
The correct answer is: The height of the tree is 8 feet (or the tree is 8 feet tall).
Step-by-step explanation:
Please see the picture attached with the same.
Given Data:
Tree's shadow is 9 feet long.
Otis is 4 feet tall.
Otis' shadow is 4.5 feet long.
We need to find out how tall the tree is.
The ratios of both of their height and their shadows should be the same, as follows:

The tree is 8 feet tall.
-i