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This was a tricky problem, but many of you tackled it successfully. Your solutions depended on whether you assumed that you could cut the paper or not. Rachel from Charter Primary said:
So, Rachel's solution kept the paper in one piece (as you would usually do when you wrap a present, for example).
This gives a cuboid with the maximum possible surface area ($1168 \;\text{cm}^2$).I wonder how you arrived at this solution, Rachel? How many differently-sized cuboids did you try before you discovered this was the largest? Rohaan from Longbay Primary looked at it in a different way, assuming that you could cut the paper:
Did anyone try to find the cuboid with the largest volume that could be wrapped up in this paper? That's another challenge for you!