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A new homeowner buys 120 square feet of carpet for a room in her new house. If the room is square, what is the length of each side of the room? (Recall that the area of a square is calculated by 2003-04-02-00-00_files/i0170000.jpg, where l is the length

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altavistard
Just find the square root of 120 square feet.  It is

sqrt(120 sq ft) = sqrt(4)*sqrt(30) = 2sqrt(30) = 10.95 feet.

the answer it is D 2 30 with that check mark thingy over it