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One more rectangular-shaped piece of metal siding needs to be cut to cover the exterior of a pole barn. The area of the piece is 30 ft². The length is 1 less than 3 times the width. How wide should the metal piece be? Round to the nearest hundredth of a foot. A.) 3.33 ft B.) 4.3 ft C.) 1 ft D.) 30 ft

Bethany Evans

in Mathematics

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Karen Wright on November 30, 2018

Let w width of the rectangle. With this representation, the length will be 3w - 1. The rectangular area of the figure is A = L x Wwhere L and W are the length and the width, respectively. Substituting the known values, 30 ft2 = (3a - 1)(w)The value of w from equation 3.33 ft.


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