adjacent so that means 1 wall will be shared
each square has 4 sides,
but they share a side so 4+4-1=7 sides total
200 divided by 7 sides=200/7 ft per side
the area of a square is side^2
side=200/7
so area=(200/7)^2=40000/49
that's for 1 square
times 2
80000/49 square feet
about 1632.6530612244897959183673469388 square feet
rounded is 1633 square feet
