Answer:
The answer is B (110.0 cm).
Step-by-step explanation:
If you multiply the diameter 35 by pi (3.14) you get 109.9.
When you round to the nearest tenth the answer 110.
As your question is stated, there is no answer!
I'm going to assume the polynomial you meant is:

To create a perfect square trinomial, take half the coefficient of x and then square it.

In all problems like this, you want to square half the coefficient of x -- always half.
32 sq ft This is because 13 times 4 is 52 and then you subtract the added 4*4 which was 16 you would get 52 - 14 which is 32 sq ft.
Y=Mx+b (m is slope, b is y-intercept)