Make the largest cone out of a cylinder with a base radius of 4 decimeters and a height of 3 decimeters. What is the volume of the cut part?
将底面半径4分米，高3分米的圆柱体木料做成最大的圆锥，被切割掉部分的体积是多少？
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3.14 * 16 * 3 * (2/3)</gadget>
<output>100.48</output>

<result>100.48</result>