A cylindrical container filled with water has a bottom diameter of 10 cm, a height of 20 cm, and a depth of 5 cm. Now a conical iron block with a bottom radius of 2cm and a height of 3cm is immersed in a container, how many centimeters will the water level rise?
一只装有水的圆柱形容器，底面直径10cm，高20cm，水深5cm．现将一个底面半径2cm，高3cm的圆锥形铁块浸没容器中，水面上升多少厘米？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 4 * 3 * (1/3)</gadget>
<output>12.56</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">12.56 / 78.5</gadget>
<output>0.16</output>

<result>0.16</result>