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convert cm to m Logs of a certain wood (specific gravity 0.309) are cylinders of radius...

convert cm to m

Logs of a certain wood (specific gravity 0.309) are cylinders of radius 16.6 cm and length 5.64 m.  Find the minimum number of logs needed to create a raft to carry a load of mass 7,198 kg when it floats in fresh water (density 1000 kg/m3).  Why is using the minimum not practical?

NOTE: The answer will most probably include a decimal; give this answer, although in real life you would have to only use a whole number of logs.

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