If a cone is completely immersed in a cylindrical container with a base diameter of 20 cm and the water level rises by 5 cm, what is the volume of the cone in cubic decimeters?
在一个底面直径为20厘米的圆柱体容器内完全浸入一个圆锥体、水面上升5厘米，这个圆锥体的体积是多少立方分米．
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

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

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">3.14 * 100 * (1/20)</gadget>
<output>15.7</output>

<result>15.7</result>