The sides of a square increase in length at a rate of 5 m/sec. a. At what rate is the area of the square changing when the sides are 19 m long? b. At what rate is the area of the square changing when the sides are 27 m long? a. The area of the square is changing at a rate of when the sides are 19 m long. b. The area of the square is changing at a rate of when the sides are 27 m long