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The perimeter of a square sticky note is $36$ centimeters. How long is each side? $\newline$ $\_\_\_\_$ centimeters

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Area and perimeter: word problems

Full solution

Q. The perimeter of a square sticky note is

36

centimeters. How long is each side?

\newline

\_\_\_\_

centimeters

Recognize formula for perimeter: Recognize the formula for the perimeter of a square. The formula is $P = 4s$ , where $P$ is the perimeter and $s$ is the side length.
Substitute given perimeter: Substitute the given perimeter into the formula. $P = 36\,\text{cm}$ , so $36 = 4s$ .
Solve for side length: Solve for $s$ by dividing both sides by $4$ . $\frac{36}{4} = s$ , so $s = 9$ cm.

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