# Squares and square roots

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##### Intros
###### Lessons
• What is a square root?
• How to find side lengths of squares using square roots?
• How to estimate non-perfect squares?
1. What is a perfect square?
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##### Examples
###### Lessons
1. Find the prime factorization. Then, identify the perfect squares.
1. 53
2. 71
3. 196
2. Find the area of the square that has a side length of:
1. 15 cm
2. 21 cm
3. Calculate.
1. $\sqrt {16}$
2. $\sqrt {49}$
3. $\sqrt {2025}$

1. Find the area of the rectangle.
2. What is the side length of a square that has the same area as the rectangle above?
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##### Practice
###### Topic Notes
This lesson focuses on finding the square of a whole number and the square root of a perfect square. In order to do this, we will first learn how to do prime factorization, a method to find the prime factors of a number.