The perimeter of a rectangle with sides 8 and 5 is equal to which expression?

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Multiple Choice

The perimeter of a rectangle with sides 8 and 5 is equal to which expression?

Explanation:
The perimeter of a rectangle comes from adding all four sides. Since opposite sides match, there are two sides of length 8 and two sides of length 5. So you add the distinct lengths and double: 2*(8+5). This accounts for both pairs of sides around the shape. The other expressions don’t reflect having two copies of each side, so they don’t match the way a rectangle’s perimeter is built.

The perimeter of a rectangle comes from adding all four sides. Since opposite sides match, there are two sides of length 8 and two sides of length 5. So you add the distinct lengths and double: 2*(8+5). This accounts for both pairs of sides around the shape. The other expressions don’t reflect having two copies of each side, so they don’t match the way a rectangle’s perimeter is built.

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