After cutting a small cuboid with a volume of 36cm**3 from a cuboid, the remaining part is exactly a square with a side length of 3cm. What is the surface area of the original cuboid?
从一个长方体上截下一个体积为36cm**3的小长方体后，剩下的部分正好是一个一个棱长为3cm正方形．原来长方体的表面积是多少？
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