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A carpenter is building a bookcase. The perimeter of the top is 108 in. If the width is 8 in., what is the length of the shelf?
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A carpenter is building a bookcase. The perimeter of the top is 108 in. If the width is 8 in., what is the length of the shelf?

User Ashley Briscoe
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2 Answers

4 votes
The length of the shelf would be 46" (inches)
User Teon
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7.8k points
2 votes
46 inches

Perimeter = 2 x length + 2 x width.
Width = 16 (2x 8)
Subtract that from the perimeter (108) to get 92.
92 = 2 x length
Divide 92 by 2 to get 46 = length.
User Alex Timonin
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7.6k points
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