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The width of Mary's rectangular room is 5 feet.
A rectangle is a quadrilateral with four right angles in the Euclidean plane.
It can alternatively be described as a parallelogram with a right angle or an equiangular quadrilateral, where equiangular denotes that all of its angles are equal.
A square is a rectangle
So, we consider Mary's room a rectangular room:
With an area of 40ft² and a length is 8ft.
Area of rectangle: l*w
Where l stands for length and w stands for width.
Now, calculate the width using the formula as follows:
Area = l*w
40 = 8*w
w = 40/8
w = 5ft
Therefore, the width of Mary's rectangular room is 5 feet.
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