conical steel billet whose base diameter and height are both 6 cm is melted and cast into a cylindrical part with a base radius of 2 cm. How many centimeters is the length of this cylindrical part?
将一个底面直径和高都是6厘米的圆锥形钢坯，熔铸成底面半径是2厘米的圆柱形零件，这个圆柱形零件长多少厘米？
<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">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">6 / 12.56</gadget>
<output>0.477707</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * 0.477707</gadget>
<output>18</output>

<result>18</result>