Use a rectangular parallelepiped container with a side length of 8 cm and a height of 16 cm to measure the vertical volume of a cone. The water contained in the container is still 2 cm away from the mouth of the cup. When the cone is placed in the container vertically, some water overflows; when the cone is taken out vertically, the water level drops by 2 cm. Find the vertical volume of the cone.
用一个底面是边长8厘米的正方形，高16厘米的长方体容器，测量一个圆锥体铅垂的体积，容器中装的水距杯口还有2厘米．当圆锥体铅垂放入容器中，有部分水溢出；当把圆锥体铅垂取出后，水面下降了2厘米．求圆锥体铅垂体积．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">8 * 8 * 4</gadget>
<output>256</output>

<result>256</result>