Cut a piece of rectangular paper with a length of 20 cm and a width of 16 cm into the largest circle. What is the radius of the circle in cm?
将一张长20厘米，宽16厘米的长方形纸剪成一个最大的圆，圆的半径是多少厘米．
<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<result>8</result>