The area of a square is 81 cm^2. What is the perimeter of the square?

Then teach the underlying concepts
Don't copy without citing sources
preview
?

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

8
Jim G. Share
Mar 6, 2016

Perimeter = 36cm

Explanation:

The area of a square = ${l}^{2}$
where l is the length of the square's side.

${l}^{2} = 81 \Rightarrow l = \sqrt{81} = 9$

hence Perimeter = $4 \times 9 = 36 c m$

• 5 minutes ago
• 7 minutes ago
• 7 minutes ago
• 8 minutes ago
• 27 seconds ago
• 38 seconds ago
• 54 seconds ago
• A minute ago
• 4 minutes ago
• 5 minutes ago
• 5 minutes ago
• 7 minutes ago
• 7 minutes ago
• 8 minutes ago