SOLUTION: If the perimeter of a square is 28 cm then the length of it's diagonal is ?

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Question 478310: If the perimeter of a square is 28 cm then the length of it's diagonal is ?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Sides = 28/4 = 7 cm
Diagonals+=+sqrt%287%5E2+%2B+7%5E2%29+=+7sqrt%282%29
it's = it is