i need help with this queshoin

Question

Andy found material around the house to make a square frame. The area of Andy’s square frame was 4 square meters. What was the side length of the pieces he used to make this square frame?  Note: only enter the numbers. Do not enter any units like meters, feet, yards, 

Answer 1

Each side is the same length because it is a square. Area= length x width. Therefore, what number multiplied by itself (because the sides are the same) equals 4? The answer would be 2.