The figure of square PQRS is given below:
As we know, In a square,
All the sides are equal.
i.e. PS = SR = RQ = PQ
Also, both the diagonals in a square are equal.
i.e. PR = QS
Now, PR = 8 units.
⇒ QS = 8 units.
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The diagonals segMHB - Mathematics (Old)
The diagonals ACMHB - Mathematics (Old)