A cuboid pool is 5 meters long, 4 meters wide, and 2 meters deep. How many square meters does it cover?
一个长方体水池长5米、宽4米、深2米，它的占地面积是多少平方米？
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<result>20</result>