Cut a cylinder vertically in half on average, and the cut plane is exactly a square with an area of 64 square centimeters. What is the volume of the cylinder in cubic centimeters?
把一个圆柱体垂直底面平均切成两半，这个切面正好是一个面积为64平方厘米的正方形，这个圆柱体的体积是多少立方厘米．
<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>

<result>401.92</result>