A cuboid piece of wood is 2.5 meters long, two sides are square, and the sum of the areas of the other four sides is 2 square meters. What is the volume of this piece of wood?
一根长方体木料，长2.5米，有两个面是正方形，其余四个面面积的和是2平方米，这根木料的体积是多少．
<gadget id="calculator">2 / 4 / 2.5</gadget>
<output>0.2</output>

<gadget id="calculator">0.2 * 0.2 * 2.5</gadget>
<output>0.1</output>

<result>0.1</result>