An engineering team plans to dig a cuboid reservoir with a length of 5 meters, a width of 3 meters and a depth of 2.5 meters. What is the area of the reservoir in square meters?
某工程队计划挖一个长为5米、宽为3米、深为2.5米的长方体蓄水池，这个蓄水池的占地面积是多少平方米
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>