[oldandtired]

Not won't share them, just want you to put in the effort to do them yourself. I am not mummy to tell you how to count on four fingers. If you are so lazy that you cannot take the time to do them for yourself then so be it.

They are simple enough for you to do, so do them and then come back and tell me that I'm wrong. I have given you enough information that, if I am wrong, you will be able to simply refute my end figures by you doing the calculations.

Consider it an exercise in helping you practice appropriate mathematical processes.

I should add that it took me about half an hour to collect the relevant information and do the calculations.

[gasbag]

I have done the calculations, and you are in fact wrong. I'd show you how, but any seventh-grader could find the mistake in 20 minutes, so I'll let you correct your own homework. I'll be nice and add that dimensional analysis is incredibly helpful.