The two sides of a right triangle are 6 cm and 3 cm respectively. What is the volume in cubic centimeters of the smallest cone obtained by rotating it around its right-angled side as the axis?
一个直角三角形的两条直角边分别是6厘米和3厘米．分别以它的直角边为轴旋转一周，所得到的最小圆锥的体积是多少立方厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 6</gadget>
<output>56.52</output>

<result>56.52</result>