A cylindrical glass with a diameter of 20 cm is filled with water, and a conical iron block with a base diameter of 6 cm and a height of 10 cm is placed in the water. How many centimeters will the water level in the glass drop when the conical iron block is taken out?
一个直径是20cm的圆柱形玻璃杯中装有水，水里放有一个底面直径是6cm，高是10cm的圆锥形铁块．当把圆锥形铁块取出来后，玻璃杯中的水面会下降多少厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

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

<gadget id="calculator">10 / 314</gadget>
<output>5/157 = around 0.031847</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * (5/157)</gadget>
<output>0.3</output>

<result>0.3</result>