Find the volume of the solid generated by revolving the infinite region in the first quadrant bounded by the curve y = e^-x and the x-axis about the y-axis. Volume of solid is. (Type an exact answer in terms of π.)
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Find the volume of the solid generated by revolving the infinite region in the first quadrant bounded by the curve y = e^-x and the x-axis about the y-axis. Volume of solid is. (Type an exact answer in terms of π.)