A cuboid piece of wood is 5m long and has a cross-sectional area of 0.08dm**2. How much does the surface area increase if the wood is cut in two?
一根长方体木料，长5m，横截面的面积是0.08dm**2．如果把这根木料截成两段，表面积就增加多少．
<gadget id="calculator">0.08 * 2</gadget>
<output>0.16</output>

<result>0.16</result>