A cube container with a side length of 7 cm is filled with water and poured into a conical container with a bottom area of 49 cm2. It is just full. What is the height of this conical container in cm?
一个棱长7厘米的正方体容器里装满水，倒入底面积是49平方厘米的圆锥形容器中，正好倒满，这个圆锥形容器的高是多少厘米？
<gadget id="calculator">3 / 49</gadget>
<output>3/49 = around 0.061224</output>

<gadget id="calculator">7 * 7 * 7 * (3/49)</gadget>
<output>21</output>

<result>21</result>