The area of the first rectangle is
The area of the second rectangle is
and so on
The area of the polygon is
I've attached the homework problem I'm having.
My biggest issue is getting it into sigma notation to use the summation rules on it. At least I think that's where my failure is.
I really need to see this or a similar problem worked out entirely using sigma notation. The homework does not use sigma notation but instead does it manually, but this is not what the instructor wants us to do.