I have a question off the internet but I am rather stuck on the question however I am quite keen to get the answer. It is:
2 cylinders have diamteters of 12 and 4cm respectively. Find the length of the shortest band that could be fixed around the cylinders to hold the two together.
It would obviously be easy to obtain the answers if they were the same diameter, although, surely in this case, the 12cm cylinder would have the band ovlerlapping by a certain amount? I am not very sure how one would find this out?
Thanks very much for any help in advance!