I had come across this problem in the past, and had learnt via experimentation using two coins that the answer is (circumference of stationery circle ÷ circumference of moving circle) +1. However your theoretical explanation really helped in understanding the underlying principles.
I had come across this problem in the past, and had learnt via experimentation using two coins that the answer is (circumference of stationery circle ÷ circumference of moving circle) +1. However your theoretical explanation really helped in understanding the underlying principles.