Cut out the largest circle on a piece of square paper with an area of 36cm**2, what is the radius of this circle in centimeters?
在一张面积为36cm**2的正方形纸上剪一个最大的圆，这个圆的半径是多少厘米？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<result>3</result>