Put a cylindrical iron block with a bottom radius of 5 cm into a container with a bottom radius of 10 cm and a height of 14 cm. The water level rises by 3 cm. Find the height of the cylindrical iron block.
把一个底半径为5厘米的圆柱铁块放入一个底半径10厘米，高14厘米的容器里，水面上升了3厘米，求这个圆柱铁块的高．
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100 * 3</gadget>
<output>942</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25</gadget>
<output>78.5</output>

<gadget id="calculator">942 / 78.5</gadget>
<output>12</output>

<result>12</result>