A cylinder is 15 decimeters high and has the same volume as a cone with the same base. What is the height of the cone?
一个圆柱高15分米，和一个圆锥等底等体积，这个圆锥的高是多少分米
<gadget id="calculator">15 * 3</gadget>
<output>45</output>

<result>45</result>