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Mathematics, 02.11.2019 03:31 maddyr04

Gan oil refinery is located on the north bank of a straight river that is 3km wide. a pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 8km east of the refinery. the cost of laying pipe is $700,000/km over land to point p on the north bank and $1,400,000/km under river to the tanks. what is the minimal cost to construct a pipeline from the refinery to the storage tanks?

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