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AMO 2019 Secondary 2 (Grade 8) Question 24

AMO · AMO 2019 Secondary 2 (Grade 8)

Question 24

Three cubes of volumes $8$, $27$, and $64$ cubic centimetres are glued together to form a solid. What is its least possible surface area in square centimetres? Use the usual arrangement with parallel corresponding edges, face contacts, and no overlapping interiors.

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