What is the Diagonal measurement in inches 20x20 square?

To find the diagonal measurement of a 20x20 square, you can use the Pythagorean theorem. The formula for the diagonal (d) is (d = \sqrt{a^2 + b^2}), where (a) and (b) are the lengths of the sides. For a 20x20 square, it would be (d = \sqrt{20^2 + 20^2} = \sqrt{400 + 400} = \sqrt{800} \approx 28.28) inches. Thus, the diagonal measurement is approximately 28.28 inches.