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Calculate the perimeter: 9cm, 3cm

October 22, 2026Mathematics

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Answer

24 \text{ cm}

5 steps

Identify the length and width of the rectangle.
The length ( $l$ ) is $9 \text{ cm}$ .
The width ( $w$ ) is $3 \text{ cm}$ .
Use the formula for the perimeter of a rectangle.
The perimeter ( $P$ ) of a rectangle is given by the formula:
$P = 2 \times (l + w)$
Substitute the given values into the formula.
$P = 2 \times (9 \text{ cm} + 3 \text{ cm})$
Perform the addition inside the parentheses.
$P = 2 \times (12 \text{ cm})$
Perform the multiplication.
$P = 24 \text{ cm}$
The perimeter of the rectangle is:
$24 \text{ cm}$

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