(A) 18.6 kN/m3
(B) 20.0 kN/m3
(C) 22.0 kN/m3
(D) 23.2 kN/m3
(A) 18.6 kN/m3
(B) 20.0 kN/m3
(C) 22.0 kN/m3
(D) 23.2 kN/m3
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