A cylinder and a cone have the same base radius and height, respectively, and their volume difference is 36 cubic decimeters. What is the volume of the cylinder in cubic decimeters?
一个圆柱和一个圆锥的底面半径和高都分别相等，它们的体积差是36立方分米，圆柱的体积是多少立方分米．
<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>