If a cuboid has a base area of 0.5 square meters and a height of 0.8 meters, what is its volume in cubic meters?
一个长方体的底面积是0.5平方米，高是0.8米，它的体积是多少立方米．
<gadget id="calculator">0.5 * 0.8</gadget>
<output>0.4</output>

<result>0.4</result>