SOLUTION: The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width, what are the dimension of the rectangle?

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Question 484149: The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width, what are the dimension of the rectangle?
Answer by chessace(471) About Me  (Show Source):
You can put this solution on YOUR website!
L = W + 4
A = L * W = (W+4)W = 45
W%5E2%2B4W-45=0
(w+9)(w-5)=0
w=5cm (-9cm would be too hard to draw).
L=5+4=9cm.