A cylindrical container with a base radius of 6 cm contains a portion of water, and a block of iron is immersed in the water. When the iron block was taken out of the water, the water level dropped by 0.5 cm. What is the volume of this block of iron in cubic centimeters?
一个底面半径是6厘米的圆柱形容器里装有一部分水，水中浸没着一块铁块．当铁块从水中取出后，水面下降了0.5厘米．这块铁块的体积是多少立方厘米？
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36 * 0.5</gadget>
<output>56.52</output>

<result>56.52</result>