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19 April, 03:23

The area of the 48 contiguous states is 3.02 x 106 miles2. Assume that these states are completely flat, no mountains and no valleys. What mass of water would cover these states with a rainfall of two inches?

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  1. 19 April, 03:29
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    1 mile = 1,609 meters

    3.02E6 mi^2 x (1609^2m^2/mi^2) = 7.818E12 m^2

    1 in = 2.54 cm = > 2 in = 5.08cm =.0508m

    7.818E12 m^2 x. 0508m = 3.97E11 m^3

    1 cubic meter = 1,000,000 cubic centimeters

    3.97E11 m^3 x (1,000,000 cm^3 / m^3) = 3.97E17 cm^3

    1000 cm^3 = 1L

    3.97E17 cm^3 x (1L / 1000cm^3) = 3.97E14 L

    or 3.97 x 10^14 L

    convert to grams since 1L is 1000g

    (3.97x10^14) x1000g which is 3.974x10^ 17g which is the final ans
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