A wind turbine with a blade diameter of 55 m is to be installed in a location where the average wind velocity if 6. 5 m/s Take the density of air to be 1. 25 kg/m². If the overall efficiency of the turbine is 38 percent, determine the a. Average electric power output, in kW b. Amount of electricity produced by this turbine for an annual operation of 7,500 h, in kWh. c. Revenue generated if the electricity is sold at a price of $ 0. 11/kWh, in $.