If the length of a dioginal of a square is 8 cm.Find the length of the side of the square.
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Consider that the side of the square is xcm.
Since the diagonals are the perpendicular bisectors, then by Pythagoras theorem,
x
2
+x
2
=8
2
2x
2
=64
x
2
=32
x=
32
x=4
2
x=5.66cm
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