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    Runoff after rainfall

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    The parking lot of the Spenditall Megamall has an area of 128 ac. It is partially landscaped to provide some areas of grass. Assume that an average of 63% of the water that falls on the parking lot will flow into a nearby drainage ditch, and the rest either evaporates or soaks into unpaved areas. If as summer thunderstorm drops 3.23 cm of ran, how many cubic feet of water will flow into the drainage ditch?

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    Please see the attached file.

    A = 128 acre x 43,560 ft2/acre = 5.57568 x 106 ...

    Solution Summary

    The solution determines the volume of water flowing into a drainage ditch based on evaporation percentage.