# SOLUTION: The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width, what are the dimensions of the rectangle? I need the algebraic formula, plus the answer.

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 Click here to see ALL problems on Miscellaneous Word Problems Question 484193: The area of a rectangle is 45 square cm. If the length is 4 cm greater than the width, what are the dimensions of the rectangle? I need the algebraic formula, plus the answer.Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!width x length = x+4 x(x+4)=45 x^2+4x=45 x^2+4x-45=0 x^2+9x-5x-45=0 x(x+9)-5(x+9)=0 (x+9)(x-5)=0 x= 5 cm the width length = 5+4 = 9 cm