Cut a cylindrical wooden block with a bottom diameter of 8 decimeters and a height of 8 decimeters into a largest cuboid, how many cubic decimeters will be cut off?
把底面直径为8分米，高也是8分米的圆柱体木块，削成一个最大的长方体，削去的体积有多少立方分米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16 * 8</gadget>
<output>401.92</output>

<gadget id="calculator">4 * 4 * 2 * 8</gadget>
<output>256</output>

<gadget id="calculator">401.92 - 256</gadget>
<output>145.92</output>

<result>145.92</result>