If the area of a square is (1/4) square meters, what is the perimeter of the square in meters?
有一个正方形的面积是(1/4)平方米，那么这个正方形的周长是多少米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 4</gadget>
<output>2</output>

<result>2</result>