I've attached a picture which include the question -- I found it on the net, and it's exactly the same as my homework.
I've got hints on this before, but I don't understand how to calculate the length, so please show me how if you can
I've attached a picture which include the question -- I found it on the net, and it's exactly the same as my homework.
I've got hints on this before, but I don't understand how to calculate the length, so please show me how if you can