In a cylindrical glass with a bottom radius of 10 cm and a water depth of 8 cm, a piece of iron with a length and width of 8 cm and a height of 15 cm should be placed in the glass. If the iron block is placed vertically in the water, what is the height of the water surface?
在一只底面半径10厘米的圆柱形玻璃杯中，水深8厘米，要在杯中放入一块长和宽都是8厘米，高15厘米的铁块．如果把铁块竖放在水中，水面高度是多少厘米？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">314 - 64</gadget>
<output>250</output>

<gadget id="calculator">8 / 250</gadget>
<output>4/125 = around 0.032</output>

<gadget id="calculator">3.14 * 100 * (4/125)</gadget>
<output>10.048</output>

<result>10.048</result>