Answer:
5 - (N x 15)
81 x 15 = 1215
5-1215=-1210
-1210 should be the 81st term
Step-by-step explanation:
To find the diameter:
2x2=4
to find the circumference:
2x2x3.14= around 12.56
I think its c on the paper hope this helped
Answer is 120.
(Sorry if photo quality is bad. The camera on my device sucks.)