In a cylindrical bucket with a bottom diameter of 30 cm, a section of steel with a bottom radius of 10 cm is placed, and the water level rises by 5 cm. What is the height of this piece of steel?
在一只底面直径为30厘米的圆柱形水桶里，放入一段底面半径为10厘米的圆锥体钢材，水面升高了5厘米，这段钢材高为多少？
<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 ** 2</gadget>
<output>225</output>

<gadget id="calculator">3.14 * 225 * 5</gadget>
<output>3_532.5</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_532.5 * (3/314)</gadget>
<output>33.75</output>

<result>33.75</result>