Square Roots: Using area

How long are the sides of a square if its area is equal to 100?

10

How long are the sides of a square that has an area of 16?

4

Calculate the side of a square that has an area equal to 25.

5

How long are the sides of a square if its area is equal to 256?

16

Calculate the length of the sides of the square given that its area is equal to 144.

$\sqrt{144}$