14/84 x100 =. 1/6 x 100 = 16.66%
Answer:
The correct answer is x= - 3
Step-by-step explanation:
Recall the definition of the composition between two functions:

Similarly, but not always the same:

Use the rules of correspondence of the functions f and g to find the compositions:

Then:

On the other hand:

Therefore, the answers are:
circumference = 2 x pi x r
56 = 2 x 3.14 x r
56 = 6.28 x r
r = 56/6.2
r = 8. 917
d = 8.917*2 = 17.8
diameter = 18 meters