To solve this, you need to know the formula to find the circumference of the circle. It is: C=2(pie)r.
C is what you are finding.
Pie is 3.14(you already got that).
R is the radius.
There is not enough information to solve your problem, but I hoped the equation helped!
Yes you would subtract but only if your subtracted it from a negetive
He had 5 friends to share it the 12 1/2 pounds. 12 1/2 divided into 5 is 2 1/2
The limit of a function f at a point a exists if:


Also,

Therefore,

Hence, the limit does not exist
I wish I knew sorry I wish I could help I'll find someone for you