A rectangle and a square have the same perimeter. The length of the rectangle is 23 cm and the width is 15 cm. What is the area of the square in square centimeters?
一个长方形和正方形周长相等．长方形的长是23厘米，宽是15厘米．正方形的面积是多少平方厘米？
<gadget id="calculator">23 + 15</gadget>
<output>38</output>

<gadget id="calculator">38 * 2</gadget>
<output>76</output>

<gadget id="calculator">76 / 4</gadget>
<output>19</output>

<gadget id="calculator">19 * 19</gadget>
<output>361</output>

<result>361</result>