Ways to Calculate Diagonal of Square Formula Method 1: If the length of one side is known. For finding the diagonal of a square using this method we simply need to Method 2: By knowing the perimeter. If the perimeter of the square is given
This method only works if you are given the area of the square. To find the length of the diagonal, you have to first find the length of one side of
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The diagonal of a square is also a hypotenuse of a right triangle with the side lengths as legs of the triangle. Use the Pythagorean Theorem to find the length of the diagonal. For the square given in the question, Report an Error Example