To find the length of each side of a square when given the area, we use the formula for the area of a square:

$\text{Area} = \text{side length}^2$

Given that the area is 49 square yards:

$\text{side length}^2 = 49 \text{ square yards}$

To find the side length, take the square root of both sides:

$\text{side length} = \sqrt{49} = 7 \text{ yards}$

So, each side of the square is 7 yards long.

Would you like more details or have any questions?

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Here are 8 related questions:

1. What is the perimeter of the square with a side length of 7 yards?
2. If the side length of the square were doubled, what would the new area be?
3. How does the area of a square change if each side is increased by 3 yards?
4. If the area were 100 square yards, what would be the side length of the square?
5. What is the length of the diagonal of a square with a side length of 7 yards?
6. How many squares with an area of 49 square yards can fit into a larger square with an area of 196 square yards?
7. What is the side length if the area is 36 square yards?
8. If the side length is increased by 2 yards, what will be the new area?

Tip: The side length of a square is always the square root of the area.