SOLUTION: what is the length of a diagonal of a square with sides of length 4

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Question 483435: what is the length of a diagonal of a square with sides of length 4
Answer by cleomenius(959) About Me  (Show Source):
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So, we use the Pythagorean theorem to determine what will essentially be the hypotenuse.
a^2 + b^2 = c^2
4^2 + 4^2 = c^2
16 + 16 = c^2
sqrt%2832%29 = c^2
sqrt%2816%29 *sqrt%282%29 = c^2
4sqrt%282%29 = c^2
4*1.414 = c^2
c = 5.656 is the diagonal.
Cleomenius.