Question 974761
Before solving the problem, we must convert 66 inches to feet.



There are 12 inches in a foot.



So, 66/12 = 5.5 feet.


The needed proportion is 5.5/h = 7/102


Let h be the height of the tree.


(5.5)(102) = 7h


561  = 7h


561/7 = h


80.142857143 = h


We can round this decimal to the nearest unit


and the tree is about 80 feet tall.


Understand?