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Amy needs to rust-proof a wrought-iron fence made of a rail that is a 1 cm thick by 4 cm wide by 102 cm long rectangular prism supported by posts that are 2 cm by 2 cm by 1 m high rectangular prisms. The posts are spaced 8 cm apart, attach to the bottom of the rail, and are embedded in cement. How much exposed surface area needs to be rust-proofed?

 May 1, 2020
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https://web2.0calc.com/questions/how-much-exposed-surface-area-needs-to-be-rust-proofed

 May 1, 2020

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