A cylindrical billet with a base diameter of 4 cm and a length of 10 cm is cast into a conical part with a base radius of 4 cm. What is the height of the conical part?
把一个底面直径4厘米长10厘米的圆柱形钢坯，铸造成底面半径4厘米圆锥形零件，圆锥形零件的高是多少？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

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

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">10 / (1/3) / 50.24</gadget>
<output>0.597134</output>

<gadget id="calculator">3.14 * 4 * 0.597134</gadget>
<output>7.500003</output>

<result>7.500003</result>