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.
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．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

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

<result>25</result>