A part has a cone on the top and a cylinder on the bottom. The radius of their bases is 2 cm and the height is 3 cm. What is the volume of this part in cubic centimeters?
一个零件，上面是圆锥，下面是圆柱，它们的底面半径都是2厘米，高都是3厘米，这个零件的体积是多少立方厘米？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 3</gadget>
<output>37.68</output>

<gadget id="calculator">37.68 / 3</gadget>
<output>12.56</output>

<gadget id="calculator">37.68 + 12.56</gadget>
<output>50.24</output>

<result>50.24</result>