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Mathematics, 07.12.2020 09:00 clipsyden

A cross-section of an irrigation canal is a parabola. If the surface of the water is 40 feet wide and the canal is 16 feet deep at the center, how far down (from the surface) is the level where it is 20 feet wide?

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A cross-section of an irrigation canal is a parabola. If the surface of the water is 40 feet wide an...
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