What is the approximate average rate at which the area decreases, as the rectangle's length goes from 13 cm to 16 cm?

What Is The Approximate Average Rate At Which The Area Decreases As The Rectangles Length Goes From 13 Cm To 16 Cm class=
What Is The Approximate Average Rate At Which The Area Decreases As The Rectangles Length Goes From 13 Cm To 16 Cm class=