The image shows a question asking to relate the area of a square to the length of its sides. Here's how we can approach this:

1. The area $A$ of a square is given by the formula: $A = \text{side length} \times \text{side length}$ This is equivalent to squaring the side length.

2. You are then asked to compute the square root of 9: $\sqrt{9} = 3$

This is how the entries in the boxes should look:

• Side length × Side length (in cm): The side length in both boxes should be the same since it's a square.
• $\sqrt{9} = 3$: The value in the box should be "3".

Would you like a deeper explanation of how these formulas are derived or any other details?

Here are five related questions:

1. How is the formula for the area of a square derived?
2. What is the difference between the area and perimeter of a square?
3. How do you calculate the side length of a square if you are given the area?
4. What is the significance of square roots in geometry?
5. Can the area of other shapes also be related to squares?

Tip: Always remember, the square root of a number is the value that, when multiplied by itself, gives that number.