A cylindrical billet with a base radius of 5 cm and a height of 18 cm is melted and cast into a cone with a base radius of 10 cm. What is the height of the cone in cm?
将一个底面半径是5厘米，高是18厘米的圆柱形钢坯，熔铸成一个底面半径为10厘米的圆锥，这个圆锥的高是多少厘米？
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">3 / 314</gadget>
<output>3/314 = around 0.009554</output>

<gadget id="calculator">3.14 * 25 * 18 * (3/314)</gadget>
<output>13.5</output>

<result>13.5</result>