Advertisement signs are commonly carried by taxi cabs for additionalincome, but they also increase the fuel cost. Consider a sign that consists of a 0.3 m high, 0.9 wide, and 0.9 long rectangular block mounted on top of a taxi cab such that the sign has a frontal area of 0.3 by 0.9 from all four sides. Determine the increase in annual fuel cost of this taxi cab due to the sign. Assume the taxis cab is driven 60,000 km a year at an average speed of 50 km/h,and the overall efficiency of the engine is 28 percent. Take the density, unit price, and heating value of gasoline to be 0.72 kg/L, $1.10/L, and 42,000 kJ/kg, respectively, and the density of the air to be 1.25 kg/m3. You may take the coefficient of drag for the advertisement sign to be 2.2.