Understand square root concept: Understand the concept of a square root. The square root of a number is a value that, when multiplied by itself, gives the original number. Since the problem asks for the positive square root, we only need to find the non-negative value that satisfies this condition for the number 4.
Calculate square root of 4: Calculate the positive square root of 4.2×2=4The positive square root of 4 is 2.