The record 24-hr rainfall in Alamance County was 6.71 inches, which fell in October, 1954. The Dry Creek Watershed, which contains much of campus and flows into the Haw River, is 4.06 square miles in size. Assuming a uniform distribution of rainfall in the watershed, determine the corresponding volume of water for this 6.71 inch event over the 4.06 square mile area in units of:   (A) Cubic feet (ft3) (B) Gallons (round off to thousands of gallons) (C) Cubic meters (m3)

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.