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The floating Platform shown is supported at each corner by a hollow sealed cylinder 1 m...

The floating Platform shown is supported at each corner by a hollow sealed cylinder 1 m in diameter. The platform itself weighs 30 KN in air, and each cylinder weighs 1.0 KN per meter of length. What total cylinder length L is required for the platform to float 1 m above the water surface? Assume that the specific weight of the water (brackish) is 10,000N/m^3. The platform is square in plain view.
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