A cone and a cylinder have the same base and height, and their volumes differ by 18 cubic decimeters. What is the volume of the cylinder?
一个圆锥体和一个圆柱体等底等高，它们的体积相差18立方分米，圆柱体的体积是多少立方分米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<result>27</result>