The width of a rectangle is the length minus 3 units. The area of the rectangle is 40 units. What is the width, in units, of the rectangle?

Question

The width of a rectangle is the length minus 3 units. The area of the rectangle is 40 units. What is the width, in units, of the rectangle?

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Camila 2 hours 2022-01-07T03:38:12+00:00 1 Answer 0 views 0

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    2022-01-07T03:39:42+00:00

    Width of the rectangle is 5 units

    Explanation:

    Let length (l) = l units

    Given,

    width (b) = l-3 units

    Area of rectangle = 40 units

    We know,

    Area of rectangle = l X b

    40= l(l-3)\\40=l^{2} - 3l\\l^{2} - 3l -40=0\\l=8units

    If l = 8 units then, b = 8-3 units

    b = 5 units

    Therefore, width of the rectangle is 5 units.

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