Draw the largest cylinder in a cuboid with a length of 8 cm, a width of 5 cm, and a height of 4 cm. What is the volume of this cylinder?
在一个长8厘米，宽5厘米，高4厘米的长方体内画一个最大的圆柱，求这个圆柱的体积是多少？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 8</gadget>
<output>100.48</output>

<result>100.48</result>