This is not an arithmetic sequence.
It does not go up or down by the same amount each time.
It is a geometric sequence
it is multiplied by 5 each time
Divide the circumference by 2 to get the radius which in your case would be 31.4
Answer:

Step-by-step explanation:





Option <u>C</u> gives the right answer.
Answer:
-3
Step-by-step explanation:
Given

we have

since we are <em>approaching</em>
, so effectively
and we use the definition of
under that condition.