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Unformatted text preview: between the two areas would be the area of the triangle DRP (DRQO  PRQO = DRP). This is the surplus satisfaction that the consumer enjoys. The numerical value of the consumers’ surplus in our example is 6 units. However, the geometrical measure of the surplus is somewhat larger. It is equal to the area of the triangle DRP (half the base into altitude) = ½ (PR x PD). PR = OQ = 4 and PD = OD  OP = 6  2 = 4. The geometric value of consumers’ surplus is ½ (4 x 4) = 8 which is larger than 6. Consumers’ Surplus is considered a somewhat hypothetical or imaginary concept. It has considerable importance in framing practical policies such as those of taxation, foreign trade , welfare promotion etc....
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 Fall '10
 
 Utility, Complex number, Euclidean geometry, Surplus intramarginal units, triangle DRP

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