A cylinder and a cone have the same volume and the same base area. If the height of the cylinder is 4.5 cm, what is the height of the cone in cm?
一个圆柱体和一个圆锥体的体积相等，底面积相等．已知圆柱体的高是4.5厘米，那么这个圆锥体的高是多少厘米．
<gadget id="calculator">4.5 * 3</gadget>
<output>13.5</output>

<result>13.5</result>