A cylinder is cut into a cone with the same base and height, and 36m**3 is cut off. What is the volume of the cone in m**3?
一个圆柱削成一个等底等高的圆锥，削去了36m**3，那么圆锥的体积是多少m**3．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<result>18</result>