A cylindrical drinking bottle with a diameter of 6 cm at the bottom and a height of 8 cm, how many milliliters of beverage can be contained in this drinking bottle.
一个圆柱形饮料瓶，底面直径6厘米，高8厘米，这个饮料瓶最多可装饮料多少毫升．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 8</gadget>
<output>226.08</output>

<result>226.08</result>