A cylinder and a cone have the same base and height, the sum of their volumes is 56dm**2, what is the volume of the cone dm**2.
一个圆柱和圆锥等底等高，它们的体积和是56dm**2，圆锥的体积是多少dm**2．
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<result>14</result>