We have to find the value of the expression 
We know that the below values.

Hence, in order to find the value of the given expression, we can first rewrite it in terms of 

Now, we know that 
Hence, we have



C is the correct option.
I believe if i am understanding the question right the radius=4
Answer: f(2) = 4
Step-by-step explanation:
F(x) and g(x) are said to be continuous functions
Lim x=2 [3f(x) + f(x)g(x)] = 36
g(x) = 2
Limit x=2
[3f(2) + f(2)g(2)] = 36
[3f(2) + f(2) . 6] = 36
[3f(2) + 6f(2)] = 36
9f(2) = 36
Divide both sides by 9
f(2) = 36/9
f(2) = 4
B I’m pretty sure sorry if wrong