Teacher Li uses a piece of cuboid clay with a length of 15 cm, a width of 10 cm, and a height of 6 cm. Now it is necessary to knead it into a cone with a base area of 90 cm2. What is the height of the cone?
李老师用一块长是15厘米，宽是10厘米，高是6厘米的长方体胶泥，现在要把它捏成一个底面面积是90平方厘米的圆锥体，求这个圆锥体的高是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / (1/3) / 90</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">15 * 10 * (1/5)</gadget>
<output>30</output>

<result>30</result>