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The perimeter of a square is 20 cm find the length of the diagonal

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keeping in mind that a square is a quadrilateral, with 4 equal sides.

if the perimeter, namely the sum of its sides, is 20, then one side alone is 20/4, or 5, thus, check the picture below.
The perimeter of a square is 20 cm find the length of the diagonal-example-1
User Dumitru Birsan
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