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The specific weight of water in S.I. units is taken as
9.81 kN/m3
9.81 × 103 N/m3
9.81 × 10-6 N/mm3
Any one of these
9.81 kN/m3
9.81 × 103 N/m3
9.81 × 10-6 N/mm3
Any one of these