The formula for finding the area of a square that has a side length, s, is A = s2. If a square has an area of 40 square units, what is the length of a side? 2 10 20
Explanation: The rule to get the area of the square is given as: A = s^2 We are given that: Area = 40 Substitute with the given area to get the side (s) as follows: A = s^2 40 = s^2 s = √40 either s = 2√10 unit length (accepted solution) or s = -2√10 unit length (rejected solution because the length of the side cannot be negative)
