A cuboid piece of wood has a length of 3m and its cross section is a square with a side length of 0.2m. What is the volume of this piece of wood?
一根长方体木料，长是3m，它的横截面是边长0.2m的正方形，这根木料的体积是多少？
<gadget id="calculator">0.2 * 0.2 * 3</gadget>
<output>0.12</output>

<result>0.12</result>