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17 March, 09:51

A rain gutter is made from sheets of aluminum that are 20 inches wide by turning up the edges to form right angles. Determine the depth of the gutter that will maximize its cross sectional area and allow the greatest amount of water to flow. What is the maximum cross-sectional area?

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  1. 17 March, 10:03
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    20in flat - > 2 sides of 10in at 90degrees from eachother

    area would be 10*10/2 = 50in^2
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