cylinder and a cone have the same base area and volume. If 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的底面积相等，体积也相等，如果圆锥的高是15分米，圆柱的高是多少分米．
<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<result>5</result>