You take the square root of the area. Example: area is 2 square cm; the square root of 2 is about 1.414, so the length of a side is 1.414 cm.
Divide the perimeter by 4 and then square the result to find the area of the square.
The square root of what? If you take the square root of the area, the answer will be the length of the side. If the area is, for example, in square meters, the length of a side will be in meters.
The length and width of a square by definition are of equal length. The area (A) of a square = d2, where d is the length of one side. If the area is known, then the length of the side of a square, d = √A (square root of A).
To find the area of a square, where all four sides are of equal length, you simply square the length of one side: for example, the area of a square of four inches is sixteen square inches, or 42 in. To find the length of the side of a square when you only know the area, you simply reverse the process, and take the square root of the area. The square root of 16 is four, for example.
Do you know how to find the area of a circle when you know the radius ? Good! Do that. Do you know how to find the area of a square when you know the length of the side ? Good! Do that. Now you have two numbers ... the area of the circle and the area of the square. The problem wants you to find the difference of these two numbers. Do you know how to use subtraction to find the difference of two numbers ? Good! Do that.
The area of a square is one side multiplied by an adjacent side. In a square all sides are the same length. Then the square root of the area must be the length of any side. If you know the area you can look up the square root in tables found in many older math books, or simply find the square on your calculator.
The field is square, so you know that its length is the same as its width and so, its area is its length times its length. So find the square root of 2500 square metres and that is the length of each side of the square field.
multiply the widht time s the length
Multiply the long side of the rectangle's length by itself.
8 meters. To find area, we multiply both sides of the square. We know that a square's sides are all the same length. This means that we can take the square root of 64 to find the length of the side. Since the square root of 64 is 8, we know that every side is 8 meters long.
Ok so area of a square is equal to the length of the side squared. So if we know the area we can take the square root to find the length of each side. Square root of 6.25 = 2.5 So the answer is 2.5
Unless it's a square, you'd have to know either the width or the length.