A foldable round table with a diameter of 2m, which becomes a square after the four sides are folded. What is the area of the square table in square meters?
一种可以折叠的圆桌子，直径2m，把四周折叠后就是一个正方形．这个正方形的桌面的面积是多少平方米？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<result>2</result>