A cylinder and a cone have the same base and height, and the sum of their volumes is 48 cubic meters. What is the volume of the cone in cubic decimeters?
一个圆柱和一个圆锥等底等高，它们的体积之和是48立方米，那么圆锥体积是多少立方分米．
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">48 * (1/4)</gadget>
<output>12</output>

<result>12</result>