Use a cylindrical wood with a base diameter of 12cm and a height of 9cm to make the largest cone. What is the volume of this cone?
用一个底面直径12cm，高9cm的圆柱形木料做一个最大的圆锥，这个圆锥的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * 9</gadget>
<output>339.12</output>

<result>339.12</result>