Question

If the area of a square is 9, then the perimeter of the square is

Answer 1

Answer:

12.

Step-by-step explanation:

The side length = sqrt 9 = 3

so the perimeter = 4*3 = 12.

Answer 2

Hi there!  

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I believe your answer is:  

12 units.  

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Here’s why:  

The formula for area of a square is:

$A=s^2\\\\\boxed{\text{Key:}}\\\\s-\text{Side length given.}$

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• We are given the area of the square, 9.
• To find the side length of the square, required to get the perimeter, we would have to take the square root of 9.

Recall that the area of a square is the square of it's side length. $(s^2)$⸻⸻⸻⸻

$\boxed{\text{Finding the side length of the square:}}\\\\\rightarrow S=9\\\\\sqrt{9}=3\\\\\rightarrow S=\boxed{3}^2$

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The side length of the square is 3 units.

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The formula for perimeter of a square is:

$P=4(s)\\\\\boxed{\text{Key:}}\\\\s-\text{Side Length}$

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• We have previously calculated the side length of the square, which is 3.
• We would have to multiply 3 by 4 to get the perimeter.

Recall that the perimeter of a square is 4 times the side length. $4(s)$.

⸻⸻⸻⸻

$\boxed{\text{Finding the perimeter of a square:}}\\\\P=4(3)\\\\\boxed{P=12}$

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The perimeter of the square is 12 units.

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Hope this helps you. I apologize if it’s incorrect.