Posted by Scott on Monday, December 6, 2010 at 3:24pm.
The side of a square equals the length of a rectangle. The width of the rectangle is 4 meters longer than its length. The sum of the areas of the square and the rectangle is 48 square centimeters. Find the side of the square

Algebra  Reiny, Monday, December 6, 2010 at 4:58pm
square  x by x
rectangle  x by x+4
x^2 + x(x+4) = 48
2x^2 + 4x  48 = 0
x^2 + 2x  24 = 0
(x+6)(x4) = 0
x = 6 or x = 4, but a side cannot be negative
so the square is 4 by 4

Algebra  Anonymous, Monday, November 14, 2011 at 11:25pm
each unit square of the rectangle below represents 1 square inch name the rectangle that show perimeter and name the permeter
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