Question 4
Mr. Nam has 10 cuboid prisms: one of size $2\text{ cm}\times2\text{ cm}\times2\text{ cm}$, three of size $1\text{ cm}\times1\text{ cm}\times2\text{ cm}$, and six of size $1\text{ cm}\times1\text{ cm}\times1\text{ cm}$. He wants to make a larger cuboid prism by using some of them. What is the biggest possible surface area, in cm², of the new cuboid prism?