cylindrical water tank with a bottom radius of 8 cm is completely submerged in a piece of iron. When the iron piece is taken out, the water level drops by 5 cm. What is the volume of this piece of iron in cubic centimeters?
一个圆柱形水槽，底面半径是8厘米，水槽中完全浸没着一块铁件，当铁件取出时，水面下降了5厘米．这块铁件的体积是多少立方厘米？
<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64 * 5</gadget>
<output>1_004.8</output>

<result>1_004.8</result>