The area of a square poster is 31 in.² to find the length of one side of the posterior to the nearest 10th of an inch

Question

8th grade math question and is on Person Realize 

Answer 1

Hi, Ally.

 

Since the poster is square, then all sides are equal.

Therefore, if the length of each side is L:

 

A = L²

31 = L²

L = 5.568

Since you need the measurement to the nearest 10th of an inch...

 

5.568 = 5.6 in.