A cylindrical bucket without a lid has a height of 6dm and a bottom radius of 2dm. How many liters of water can this bucket hold?
一个无盖的圆柱形水桶，高是6dm，底面半径是2dm，这个水桶可以装多升水？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>

<result>75.36</result>