What is the length of the diagonal of a square with area 40 cm^2

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- Sep 22nd 2008, 06:10 PMandrewpark2diagonal
What is the length of the diagonal of a square with area 40 cm^2

- Sep 22nd 2008, 06:14 PMChop Suey
The area of a square is:

Using this you can find the length of the a side of a square. To find the length of the diagonal, think of it as the hypotenuse of a triangle with legs . Then, using the Pythagorean Theorem: