A cylinder and a cone have the same base and volume. The height of the cone is 15 decimeters. What is the height of the cylinder in decimeters?
一个圆柱和一个圆锥等底等体积，圆锥的高是15分米，圆柱的高是多少分米．
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<result>5</result>