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To find the diagonal, use the Pythagorean theorem by drawing a diagonal through the square. You then have two sides that should equal the hypotenuse ( or diagonal). The equation should look like 8^2 + 8^2 = h^2. or 64+64= h.


take the square root of 128 and you have your answer.

the answer should be around 11.

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Q: A square measure 8 inches on each side Approximately how long is its diagonal?
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