To find the width of a rectangle when the area and length are known, set up an equation using the given information and solve for the width, which in this case is approximately 3.5 units.
Area of a rectangle is the product of its length and width. Given that the area is 28 and the length exceeds the width by 4.5, we can set up the equation to find the width.
Let x be the width, then the length is x + 4.5. Multiplying length and width should equal 28: x(x + 4.5) = 28. Solving for x, we find the width is approximately 3.5 units.
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