A cuboid is 2.4 meters long, 3 decimeters wide and 3 decimeters high. If it is sawed 4 times, how many square decimeters will the surface area increase from the original?
一根长方体木料长2.4米，宽和高都是3分米，把它锯了4次，表面积比原来增加了多少平方分米．
<gadget id="calculator">3 * 3 * 8</gadget>
<output>72</output>

<result>72</result>