There is a cuboid, if it is cut into two identical cuboids by three different methods, their surface areas will increase by 30 cm2, 20 cm2 and 12 cm2 respectively. What is the surface area of this cuboid in square centimetres.
有一个长方体，若用三种不同的方法切成两个完全一样的长方体，它们的表面积分别增加30平方厘米、20平方厘米、12平方厘米．这个长方体的表面积是多少平方厘米．
<gadget id="calculator">30 + 20 + 12</gadget>
<output>62</output>

<result>62</result>