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Merideth has a set of ninety 1-inch tiles. If she starts with one tile, then surrounds it with a ring of tile to create a larger square, how many surrounding rings can she make before she runs out of tiles?

User Aubin
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1 Answer

6 votes
90-1-8-16-24-32= 81 so 4 rings with 9 tiles left
User Suvro
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