cuboid and a cone have the same base and height, and the sum of their volumes is 12.56dm**3. What is the volume of the cone dm**3, which is less than the volume of the cuboid ((())/(())).
一个长方体和一个圆锥等底等高，它们的体积和是12.56dm**3．这个圆锥的体积是多少dm**3，比长方体的体积少((())/(()))．
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">12.56 / 4</gadget>
<output>3.14</output>

<result>3.14</result>