JEA_last_417_19.txt

This HW was intended to increase the number of points
to be used in the HW grade average since many in the 
class lost 50% credit by not giving units in a prior
solution.

I expected this to be a gift. I was very surprised by 
how BAD the attempts were. Three solutions were correct.
Others only got the shape of a square correct (but not 
its thickness). Grades ranged from 105/100 to 5/100.

The lesson to me is require more use of commercial 
software in homework  in the future.