A conical part is immersed in a cylindrical glass tank with a bottom diameter of 3 decimeters, and the water level rises by 4 cm. What is the volume of this cone in cubic centimeters?
将一个圆锥形零件浸没在底面直径是3分米的圆柱形玻璃缸里，这时水面上升4厘米．这个圆锥形零件的体积是多少立方厘米．
<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

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

<gadget id="calculator">3.14 * 225 * 4</gadget>
<output>2_826</output>

<result>2_826</result>