If the perimeter of a square is 1.2 meters, what is its area in square meters?
一个正方形的周长是1.2米，它的面积是多少平方米．
<gadget id="calculator">1.2 / 4</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 * 0.3</gadget>
<output>0.09</output>

<result>0.09</result>