The perimeter of a square pool is 2.2 meters, what is the area of the pool in square meters?
一个正方形水池的周长是2.2米，这个水池的占地面积是多少平方米？
<gadget id="calculator">2.2 / 4</gadget>
<output>0.55</output>

<gadget id="calculator">0.55 * 0.55</gadget>
<output>0.3025</output>

<result>0.3025</result>