[" 4.If the diagonals of a parallelogram...

[" 4.If the diagonals of a parallelogram are "3hat i+hat j-2hat k" and "],[hat i-3hat j+4hat k," then the lengths of its sides are "],[[" (a) "sqrt(8),sqrt(10)," (b) "sqrt(6),sqrt(14)],[" (c) "sqrt(5),sqrt(12)," (d) none of these "]]

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