Constructing Rain Gutters A rain gutter is to be made ofaluminum sheets that are 12 inches wide by turning up theedges 90°. See the illustration.(a) What depth will provide maximum cross-sectional areaand hence allow the most water to flow?(b) What depths will allow at least 16 square inches of waterto flow?

Q: 19 m 8 m 11 m 21 m

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