A 2.5m long cuboid wood with a square base and 3dm sides, if the wood is sawn into 3 sections along the same direction as the base, how many square decimeters will the surface area increase?
一根长2.5m的长方体木料，底面是正方形，边长3dm，如果沿着与底面平等的方向把这根木料锯成3段，表面积增加多少平方分米．
<gadget id="calculator">3 * 3 * 4</gadget>
<output>36</output>

<result>36</result>