A cylinder and a cone have the same base area and height. The volume of the cylinder is 15 cubic decimeters. What is the volume of the cone?
底面积和高都相等的圆柱和圆锥，圆柱的体积是15立方分米，圆锥的体积是多少．
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<result>5</result>