The area of a square is 81 cm squared. Find the perimeter of the square. SHOW STEPS PLEASE!

2 answers:

8 0

The area of a square is x^2 where x is the length of a side. If the area is 81, that means one side is sqrt(81). There are 4 sides so the perimeter is 4sqrt(81) = 4*9 = 36 cm.

Nataly_w [17]3 years ago

4 0

Area of a square is A=side^2 since it a sqaure all sides are equal.
81=s^2 take the square root
s=9
Perimeter is p=4s since all sides are equal
So p=4(9)
p=36

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