Melt a cylinder of iron into a cone of iron. It is known that the radius of the bottom of the cylinder is 2 cm and the height is 3 cm. The radius of the bottom of the fused cone is 3 cm. So what is the height of the cone?
把圆柱体铁块熔制成一个圆锥体铁块，已知圆柱的底面半径是2厘米，高是3厘米，熔制成圆锥的底面半径是3厘米．那么圆锥的高是多少？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">3 / 28.26</gadget>
<output>0.106157</output>

<gadget id="calculator">3.14 * 4 * 3 * 0.106157</gadget>
<output>3.999996</output>

<result>3.999996</result>