The length of a swimming pool is 30m, the width is 20m, and the depth is 3m. What is the area of the swimming pool in m**2.
一个游泳池的长30m、宽20m、深3m，这个游泳池占地面积是多少m**2．
<gadget id="calculator">30 * 20</gadget>
<output>600</output>

<result>600</result>