The sequence can be represented by 
, where 
is a whole number(
and is an integer). By this, we should be able to plug in some whole number x and be able to get these values if they are in the sequence. To test this, let's set these numbers equal to and confirm that there is a whole number x which equals the values selected.
When trying 160 with our equation, we find that x doesn't equal a whole number, thus our answer is C, or 160. To confirm our answer, we can test 170 and 210 and confirm that they both give us a value for x which is a whole number.
Answer:
Radius: 10.5
Circumeference: 65.97
Area: 346.36
Step-by-step explanation:
Ok, What you have to do is get a ruler and put whole numbers down like 1234 and in between the whole numbers are fractions like the little lines in between the big lines those are considered the fractions. Hope i helped
