SOLUTION: hi! i have a question i need help on about rectangles. this is the problem. a rectangle is 6 cm long and 4cm wide. if each dimension is increased by the same number of centimeters

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Question 617185: hi! i have a question i need help on about rectangles. this is the problem.
a rectangle is 6 cm long and 4cm wide. if each dimension is increased by the same number of centimeters, a new rectangle is formed whose area is 39 square centimeters more than the area of the original rectangle. By how many centimeters was each dimension increased?
thank you
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
(6+x)*(4+x)=6*4+39
x=3
Each dimension was increased by 3 cm.
(disregard negative answer of -13)