Mathematics, 21.11.2020 15:20 tottresstrinity

A crane has a cable with a breaking strain of 6400kg measured to 2 significant figures it is used to lift crates which weigh 90kg measured to the nearest 10kg what is the greatest number of crates that can safely be lifted at one time without breaking the cable some working must be shown

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A crane has a cable with a breaking strain of 6400kg measured to 2 significant figures it is used to...