A metal cone with a base radius of 10 cm is completely submerged in a cylindrical glass tank with a diameter of 40 cm. At this time, the water level of the tank is 1.5 cm higher than before. What is the height of the metal cone?
将一个底面半径是10厘米的金属圆锥体，全部浸没在直径是40厘米的圆柱体玻璃水槽中，这时水槽水面比原来升高1.5厘米，问这个金属圆锥体的高是多少？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">20 ** 2</gadget>
<output>400</output>

<gadget id="calculator">3.14 * 400 * 1.5</gadget>
<output>1_884</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">1_884 * (3/314)</gadget>
<output>18</output>

<result>18</result>