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15 November, 08:12

The perimeter of a rectangle is 58 inches. find the width of the rectangle if the lengh is 20 in

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  1. 15 November, 11:58
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    The width of the rectangle is 9 inches.

    Step-by-step explanation:

    The formula of perimeter is Perimeter = 2·length + 2·width. The length is 20. If we call "x" to the width.

    Perimeter = 2· (20) + 2·x ⇒ Perimeter = 40 + 2x ⇒ 58 = 40 + 2x ⇒

    58 - 40 = 2x ⇒ 18 = 2x ⇒18/2 = x ⇒ 9 = x.

    The width of the rectangle is 9 inches.
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