Put a conical iron block with a base radius of 1 cm into a cylindrical glass filled with water. The water rises by 0.2 cm. The base radius of the glass is 5 cm. How high is the conical iron block in cm?
把一个底面半径为1厘米的圆锥形铁块放入盛有水的圆柱形玻璃杯中，水上升了0.2厘米，玻璃杯的底面半径是5厘米，圆锥形铁块高多少厘米？
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 0.2</gadget>
<output>15.7</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">3 / 3.14</gadget>
<output>0.955414</output>

<gadget id="calculator">15.7 * 0.955414</gadget>
<output>15</output>

<result>15</result>