On a piece of rectangular paper with a length of 10 cm and a width of 6 cm, cut out the largest semicircle. What is the circumference of this semicircle in cm?
在一张长10厘米、宽6厘米的长方形纸上，剪一个最大的半圆，这个半圆的周长是多少厘米．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">3.14 * 5</gadget>
<output>15.7</output>

<gadget id="calculator">15.7 + 10</gadget>
<output>25.7</output>

<result>25.7</result>