3. The rectangle shown below has a perimeter of 24 inches. What is the unknown length, in inches, of the rectangle? One side of the rectangle is labeled 7 inches and the opposite side has a question mark.

Nigel Benns asked Jan 21, 2023

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Nigel Benns asked Jan 21, 2023

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24 votes

If the perimeter of the rectangle is 24 inches, and the height is 7 inches, and there's an unknown side, we'll have:

7 + 7 + x + x =24

14 + 2x = 24

2x=24-14

2x=10

x=5 inches

The unknown length is 5 inches.

Mike Vosseller answered Jan 27, 2023

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