Cut it off and join, without gaps and overlapping

From the figure A above, we can fill the gaps (in squares) using the shapes outside the squares. We then obtain 5 squares in figure B, which each of side length $10 \sqrt{2}$ . Hence the area of each square is $100 \times 2 = 200$ . Therefore the total area of the shape in figure 2 (in the question) is $5 \times 200 = \boxed{1000}$ .

Area of each circle is $100π$ . Area of the cut off region from each circle is $100π-200$ . So the area of the remaining portion of each circle is $200$ . There are five such figures in shape $2$ , whose total area is $5\times 200=\boxed {1000}$ .