How many 2-foot-square floor tiles are needed to cover the floor of a rectangular room 32 feet in length and 30 feet in width?

480

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Depends. Do you mean 2 sq ft per tile, or each tile 2 ft x 2ft (which is 4 sq ft per tile)???

2 sq ft per tile is 480, but using 2x2 tiles would need half that- 240.