Answer:
5.57
Step-by-step explanation:
In order to find the are of a square you would use the equation a². However, since you are finding the length of one side and its a square, you use the equation [tex]\sqrt{a}[/tex]. The area of this square is 31 sq in., so you would replace a with 31. The equation then becomes [tex]\sqrt{31}[/tex]. When out into a calculator, the answer is 5.567764... which rounded up to the nearest hundreth is 5.57.