Cut a cylindrical part with a diameter of 6cm and a height of 3cm into the largest cone, what is the volume of the cone in cm**3.
把直径为6cm，高是3cm的圆柱形零件削成最大的圆锥，削成的圆锥体积是多少cm**3．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">(1/3) * 3.14 * 9 * 3</gadget>
<output>28.26</output>

<result>28.26</result>