A cylinder and a cone have the same base and height, and their total volume is 100 cubic decimeters. What is the volume of the cone in cubic decimeters, which is less than the volume of the cylinder ((())/(())).
一个圆柱和一个圆锥等底等高，它们的体积一共是100立方分米．圆锥的体积是多少立方分米，比圆柱的体积少((())/(()))．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<result>25</result>