Answer:
C
Step-by-step explanation:
0.9 meters. 170 degrees
Um so 42 squared is 1764 and 1764 squared is 3111696 so then 6 is the unit digit
Short Answer: AB
Argument
Take F to be the center. The line segment that IS a diameter or radius must either go through F (that would make the line a diameter) or to be a radius the segment mus end in F and touch the circumference once. See below.
The diameter must not only go through F, it must touch the circumference in two places. EFB is a diameter. So is AFC
The radius must have 1 endpoint at the center and one endpoint on the circumference. DF is a radius.
So what isn't? Answer: AB isn't. It neither goes through F nor is F one of the end points.
Answer: AB
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.
Answer choice B is most correct. For answer a, there would be less visitors the more it rains. For b, the more the item costs, the more sales tax you pay. For answer c, the more people seated at a table, the less space per person. And for answer d, the more cats, the less mice there would be.