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23-01-2018
Mathematics

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The length of a rectangle is 3 m longer than its width.
The area of the rectangle is 154 m².
What is the width of the rectangle?

___M

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cdw2014 cdw2014

23-01-2018

The area of a rectangle is length times width.

A = (w+3)*w = 154

w^2 + 3w-154 = 0

Factor

(w-11)(w+14) = 0

w = -14 or 11... It cannot be negative so the answer is 11 m

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