If a wooden box with a length of 4 meters, a width of 3 meters and a height of 3 meters is placed flat on the ground, what is the minimum area in cubic meters
一个长4米、宽3米、高3米木箱平放在地面上，占地面积至少是多少立方米
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>