If the perimeter of a square is 52 meters, what is the area of the square?
有一个正方形的周长是52米，正方形的面积是多少．
<gadget id="calculator">52 / 4</gadget>
<output>13</output>

<gadget id="calculator">13 * 13</gadget>
<output>169</output>

<result>169</result>