You would have to find the proportionality of the two. If his shadow is 3 feet long, and the tree's shadow is 9 that means it is proportioned by 3. So the height of the tree would be 15.
Answer:

Step-by-step explanation:
To convert from feet to yards, divide by the value 3.
Answer:
62%
Step-by-step explanation:
Answer:
x=5
Step-by-step explanation: