A cylinder and a cone have a base diameter of 6 cm and a height of 12 cm. What is their total volume in cubic centimeters?
一个圆柱和一个圆锥，它们的底面直径都是6厘米，高都是12厘米．它们的体积共有多少立方厘米？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 12</gadget>
<output>339.12</output>

<gadget id="calculator">339.12 / 3</gadget>
<output>113.04</output>

<gadget id="calculator">339.12 + 113.04</gadget>
<output>452.16</output>

<result>452.16</result>