Answers

2014-03-07T14:15:41+05:30
We know 
numbere of items fromed=  Metal to be cut dimension
                                        -------------------------------------
                                        metal to which it willl be formed dimension
apply the dimension and you are done!
                                              
0
2014-03-07T15:37:50+05:30
No. of box=surface area of the big box/s.area of the given edge
  =92.74/6
  =15.5
0