I think this is more of an opinion than an actual answer
You just need to multiply it 4x2x2x2x1.7=54.4ft im pretty sure
Answer:
The tree is 48 feet tall.
Step-by-step explanation:
Cross multiply. ⇒ 
5 times 8 equals 40, so 6 times 8 equals ___?
Solve. ⇒ 
The tree is 48 feet tall.