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PROBLEM 29: A barge weighing 350 kN when empty is 6 m wide, 15 m long and 3 m high. Floating upright, evaluate the draft of the barge in meters when transporting 5000 bags of cement along a river, each bag having a mass of 40 kg. Assume the specific gravity of the water in the river to be 1.02. a. 1.57 m b. 3.57 m c. 2.57 m d. 4.57 m PROBLEM 30: An iceberg having a specific gravity of 0.90 floats in salt water having a specific gravity of 1.03. If the volume of the ice above the surface is 500 m' what is the volume of the iceberg? a. 3514.69 m b. 3961.54 m c. 3165.94 m d. 3456.19 m'