The area of a circle is 314 square centimeters (pi is 3.14), what is the area of the largest square inside the circle in square centimeters
圆的面积是314平方厘米(圆周率为3.14)，圆内最大正方形的面积是多少平方厘米
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<result>200</result>