cylinder and a cone have the same base and height. If the volume of the cone is 18 cubic decimeters, what is the volume of the cylinder?
一个圆柱体和一个圆锥体等底等高，如果圆锥体的体积是18立方分米，那么圆柱体的体积是多少立方分米．
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>