I'm guessing you mean:
If not, correct me.
So, then the perimeter of a square is just 4*A, which in this case would be:
And that would be your answer:
units²
Yes it does I went on Desmos graphing Calculator and put in the equation and got those answers
For the first part you need to find 85% of 16,000. its 13,600. you get this by multiplying .85 by 16,000.
for part two, i don't know how to show the work, but 816 is 96% of 850.
sorry about that, but i hope it helps