A cuboid iron block with a length of 9 cm, a width of 7 cm, and a height of 5 cm is melted and cast into a conical part with a base area of 105 cm2. What is the height of the cone in centimeters?
把一个长是9厘米，宽是7厘米、高是5厘米的长方体铁块，熔铸成一个底面积是105平方厘米的圆锥形的零件．这个圆锥形的高是多少厘米？
<gadget id="calculator">9 * 7 * 5</gadget>
<output>315</output>

<gadget id="calculator">3 / 105</gadget>
<output>1/35 = around 0.028571</output>

<gadget id="calculator">315 * (1/35)</gadget>
<output>9</output>

<result>9</result>