Sales taxdesign a hierarchy chart or flowchart for a program that calculates the total of a retail sale. the program should ask the user for:
(a) the retail price of the item being purchased
(b) the sales tax rate
once these items have been entered, the program should calculate and display:
(a) the sales tax for the purchase
(b) the total of the sale

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.