A cylinder and a cone have the same base area and height. It is known that the sum of their volumes is 48 cubic decimeters. What is the volume of the cylinder?
一个圆柱体和一个圆锥体的底面积和高都相等，已知它们体积之和是48立方分米，圆柱的体积是多少．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>