plz answer 5 (1)........
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The rhombus is divided into 4 congruent triangles by its diagonals.
Also the diagonals intersect at right angles and since it is a parallelogram its diagonals bisect each other.
So by pythagoras theorem, 64 + 36 = s^2
s = 10 cm
Perimeter = 4*10 = 40 cm
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