Expand the side of a cylinder with a height of 3 cm along the height to obtain a rectangle, the length of which is 9.42 cm, how many cubic centimeters should be removed to cut it into the largest cone.
将一个高3厘米的圆柱的侧面沿高展开得到一个长方形，长方形的长是9.42厘米，将它削成一个最大的圆锥要去掉多少立方厘米．
<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 ** 2</gadget>
<output>2.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3.14 * 2.25 * 3 * (2/3)</gadget>
<output>14.13</output>

<result>14.13</result>