A cuboid iron bucket is 6dm high and the bottom is a square with side length 3dm. It can hold up to how many liters of water.
长方体铁皮水桶高6dm，底面是边长3dm的正方形，它最多可以装水多少升．
<gadget id="calculator">3 * 3 * 6</gadget>
<output>54</output>

<result>54</result>