cuboid can be divided into two small cubes from the middle. At this time, the surface area increases by 20 square centimeters. What is the surface area of the original cuboid in square centimeters?
一个长方体从中间正好能分成两个小正方体，这时表面积增加20平方厘米，原来长方体的表面积是多少平方厘米．
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<result>100</result>