A cone and a cylinder have the same base and height. The volume of the cone is 28 cubic decimeters less than the volume of the cylinder. What is the volume of the cone?
一个圆锥和一个圆柱等底等高，圆锥的体积比圆柱的体积少28立方分米，圆锥的体积是多少立方分米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">28 / 2</gadget>
<output>14</output>

<result>14</result>