Suppose a cylindrical iron block with a base radius of 2 cm and a height of 15 cm is melted into a conical part with a base radius of 4 cm. What is the height of the cone in cm?
比一底面半径为2厘米，高为15厘米的圆柱形铁块熔化成一个底面半径为4厘米的圆锥形零件，这个圆锥的高是多少厘米？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 15</gadget>
<output>188.4</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">188.4 / (1/3) / 50.24</gadget>
<output>11.25</output>

<result>11.25</result>