1) Radius:1 - 2(Pi)r = 2.68 2) Radius:4 - 2(Pi)r = 25.12

25.12/2.68 = 9.3 revolutions!?

Where I am I going wrong?

## 1) Radius:1 - 2(Pi)r =

1) Radius:1 - 2(Pi)r = 2.68

2) Radius:4 - 2(Pi)r = 25.12

25.12/2.68 = 9.3 revolutions!?

Where I am I going wrong?