A cylinder and a cone have the same base area and volume, and the height of the cylinder is 5 cm. What is the height of the cone in cm?
一个圆柱体和一个圆锥体的底面积和体积分别相等，已知圆柱体的高5厘米，那么圆锥体的高是多少厘米．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>