What's New This module contains the concept of Principal Roots and how to determine whether it is rational or irrational. Let's explore! You have learned to use the length of a side of a square to find the area. You can use this area to find the length of a side. The square shown on the right has a side 1 unit long. Its area is 1 square unit. 1. Make a square with area of 4 square units on the grid. What is the length of the side? 2. Make a square with area of 9 square units on the grid. What is the length of the side? 3. Make a square of an area of 2 square units. a. How do you know that the area of the square you have done is 2 square units? b. How do you know that the figure you drew is a square? c. Estimate the length of a side of the square.pasagot na maayos​