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#### gmat paper test 14 Geometry

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 Post subject: gmat paper test 14 Geometry  Posted: Mon Aug 27, 2007 2:40 pm
 The size of a television screen is given as the length of the screenâ€™s diagonal. If the screens were flat, then the area of a square 21-inch screen would be how many square inches greater than the area of a square 19-inch screen? (A) 2 (B) 4 (C) 16 (D) 38 (E) 40

 Post subject:   Posted: Mon Aug 27, 2007 3:06 pm
 Area of the square of 21 inch screen = L^2 where length of the square = diagonal/(2)^1/2 = (21/(2)^1/2)^2 similarly, area of the square of 19 inch screen = (19/(2)^1/2)^2 Difference = ((21)^2 - (19)^2)/2 = (40*2)/2 = 40 GMAT 2007

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