piece of cardboard is a right-angled triangle, the two sides of which are 3 cm and 6 cm respectively. What is the maximum volume of a three-dimensional figure obtained by rotating it around one of its right-angled sides as an axis?
一张直角三角形的硬纸片，两条直角边分别是3厘米、6厘米．以它的一条直角边为轴旋转一周，得到的立体图形体积最大是多少立方厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 36 * 3</gadget>
<output>113.04</output>

<result>113.04</result>