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logs of a certain wood( specific gravity 0.274) are cylinders of radius 19.5 cm and length...

logs of a certain wood( specific gravity 0.274) are cylinders of radius 19.5 cm and length 8.36 m. find the minimum number of logs needed to create a raft to carry a load of mass 9,418 kg when it floats in fresh water (density 1,000 kg/m^3)

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