Physics 221

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Hydraulic engineers in the United States often use, as a unit of volume of water, the acre-foot, defined as the volume of water that will cover 1 acre of land to depth of 1 ft.(feet) A severe thunderstorm dumped 2.0in. (inches) of rain in 30 minutes on a town of area 26 km2 (squared). What volume of water, in acre-feet, fell on the town?

• Physics 221 -

1/6 ft*26km^2 in acre feet

Now, work it out to make certain you can get the same answer.

• Physics 221 -

.1666

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