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We'll next create the bottom edge corresponding to the nozzle wall. This edge is curved. Since

A = Πr2

where r(error) ( x ) is the radius of the cross-section at x and

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for the given nozzle geometry, we get

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r( x ) = \[(0.1 + x{^}2^)/*Π*\]^0.5^; \-0.5 < x < 0.5

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