Answer:
Perimeter: 36 inches
Area: 81 inches²
Step-by-step explanation:
Hi there!
<u>1) Find the perimeter</u>
Apply the formula for the perimeter of a square:
where <em>a</em> is the side length
Replace <em>a</em> with 9:

Therefore, the perimeter of the square is 36 inches.
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<u>2) Find the area</u>
Apply the formula for the area of a square:
where <em>a</em> is the side length
Replace <em>a</em> with 9:

Therefore, the area of the square is 81 inches².
I hope this helps!