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#GRE practicequestion The figure above is made up of 4 squares.jpg
This becomes a triangle which has the angles in the ratio of
45:45:90 or
x:x:x√2We do know this because the segment AB is
8√2which means that the other sides are 8
One side of a square is 4.
We want to know the perimeter of the shaded region which has 10 sides
4×10=40C is the answer
Aren't we supposed to be told that all the squares are equal? By assuming that they are equal, we might be missing a case when they aren't.