A cylinder and a cone have the same base and height, and the sum of their volumes is 36 cubic meters. What is the volume of the cone in cubic meters?
一个圆柱与一个圆锥等底等高，他们的体积和是36立方米，那么圆锥的体积是多少立方米．
<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">36 * (1/4)</gadget>
<output>9</output>

<result>9</result>