Assuming rotation is about origin, then
R180: (x,y)->(-x,-y)
So
A(6,8)->A'(-6,-8)
B(6,12)->B'(-6,-12)
C(10,12)->C'(-10,-12)
Answer:
The perimeter of the square is 76ft.
The Quotient would be 1012 so I would just put 1000 if your supposed to estimate.
