The sum of the height and the diameter of the base of a cone is 18 decimeters, and the ratio of the height to the diameter of the base is 1:2. What is the volume of the cone in cubic decimeters?
一个圆锥体的高与底面直径的和是18分米，高与底面直径的比是1：2，圆锥体的体积是多少立方分米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18 * (2/3)</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">18 - 12</gadget>
<output>6</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * 6</gadget>
<output>226.08</output>

<result>226.08</result>